{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T00:44:00.487Z"},"system":{"slug":"ca__cal-am-water-company-san-marino__CA1910139","name":"Cal/am Water Company - San Marino — Rosemead, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/cal-am-water-company-san-marino-rosemead-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/cal-am-water-company-san-marino-rosemead-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/cal-am-water-company-san-marino-rosemead-ca/2023/llms.txt","coordinates":{"latitude":34.1215947,"longitude":-118.105739},"contaminantsMeasured":26,"contaminantsWithFederalLimit":18,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":0,"source":{"type":"Consumer Confidence Report (CCR)","description":"Figures are transcribed from the water utility's own annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing."},"families":[{"family":"disinfectant","familyLabel":"Disinfectants","contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":1.53,"low":1.17,"high":1.53,"kind":"range","display":"1.17–1.53","units":"mg/L","statisticType":"range","samplingContext":"plant:Range Detected","censored":false,"detectionLimit":null,"rawVerbatim":"1.17 – 1.53"},"federalStandard":{"type":"MRDLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.53,"low":1.17,"high":1.53,"kind":"range","display":"1.17–1.53","units":"mg/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"1.17 – 1.53"},{"value":1.17,"low":null,"high":null,"kind":"point","display":"1.17","units":"mg/L","statisticType":"min","samplingContext":"plant:Chlorine Residual","rawVerbatim":"1.17"},{"value":1.31,"low":null,"high":null,"kind":"point","display":"1.31","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.31"}]}]},{"family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","contaminants":[{"analyteId":"haa5","name":"HAA5","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.","whyItMatters":"Long-term exposure above the federal limit is associated with an increased cancer risk.","measured":{"value":2.3,"low":null,"high":null,"kind":"point","display":"2.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.3"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.3,"low":null,"high":null,"kind":"point","display":"2.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","rawVerbatim":"2.3"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"0 to 5.5"}]},{"analyteId":"perchlorate","name":"Perchlorate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14797-73-0","whatItIs":"A chemical used in rocket fuel and fireworks that can also form during disinfection.","whyItMatters":"Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.","measured":{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"PHG","value":1,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0.81,"display":"0.81"},"range":{"low":null,"high":null,"display":"1.5"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.81"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 1.5"}]},{"analyteId":"tthm","name":"TTHM","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.","whyItMatters":"Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.","measured":{"value":13.4,"low":null,"high":null,"kind":"point","display":"13.4","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"13.4"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":13.4,"low":null,"high":null,"kind":"point","display":"13.4","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","rawVerbatim":"13.4"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"0 to 29"}]}]},{"family":"inorganic","familyLabel":"Inorganic chemicals","contaminants":[{"analyteId":"fluoride","name":"Fluoride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16984-48-8","whatItIs":"A mineral often added to drinking water to help prevent tooth decay.","whyItMatters":"Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.","measured":{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"PHG","value":1,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"mg/L","average":{"value":0.81,"display":"0.81"},"range":{"low":null,"high":null,"display":"0.62"},"ratio":0.2025},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"mg/L","average":{"value":0.7,"display":"0.7"},"range":{"low":0.3,"high":0.8,"display":"0.3–0.8"},"ratio":0.2}],"measurements":[{"value":0.8,"low":0.3,"high":0.8,"kind":"range","display":"0.3–0.8","units":"mg/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"0.3 – 0.8"},{"value":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"0.7"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.81"},{"value":0.62,"low":null,"high":null,"kind":"point","display":"0.62","units":"mg/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.62 to 0.96"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":2.9,"low":null,"high":null,"kind":"point","display":"2.9","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"2.9"},"federalStandard":{"type":"PHG","value":10,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"mg/L","average":{"value":2.9,"display":"2.9"},"range":{"low":null,"high":null,"display":"1.1"},"ratio":0.29},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"mg/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":2.9,"low":null,"high":null,"kind":"point","display":"2.9","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"2.9"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"1.1 to 4.4"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"analyteId":"aluminum","name":"Aluminum","family":"metal","familyLabel":"Metals","casrn":"7429-90-5","whatItIs":"A common element sometimes used as a treatment coagulant.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels can discolor water.","measured":{"value":93,"low":null,"high":null,"kind":"point","display":"93","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","censored":false,"detectionLimit":null,"rawVerbatim":"93*"},"federalStandard":{"type":"PHG","value":600,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":93,"display":"93"},"range":{"low":0,"high":150,"display":"0–150"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":93,"low":null,"high":null,"kind":"point","display":"93","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"93*"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":150,"low":0,"high":150,"kind":"range","display":"0–150","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND - 150"}]},{"analyteId":"arsenic","name":"Arsenic","family":"metal","familyLabel":"Metals","casrn":"7440-38-2","whatItIs":"A naturally occurring element that also enters water from industry and agriculture.","whyItMatters":"A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.","measured":{"value":0.61,"low":null,"high":null,"kind":"point","display":"0.61","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.61"},"federalStandard":{"type":"PHG","value":0.004,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0.61,"display":"0.61"},"range":{"low":null,"high":null,"display":"3.1"},"ratio":0.31000000000000005},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":3.1,"low":null,"high":null,"kind":"point","display":"3.1","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 3.1"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0.61,"low":null,"high":null,"kind":"point","display":"0.61","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.61"}]},{"analyteId":"chromium_hex","name":"Chromium, Hexavalent","family":"metal","familyLabel":"Metals","casrn":"18540-29-9","whatItIs":"Hexavalent chromium ('chromium-6') — the more toxic form of chromium.","whyItMatters":"A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.","measured":{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"8.2"},"federalStandard":{"type":"PHG","value":0.02,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":8.2,"display":"8.2"},"range":{"low":null,"high":null,"display":"5.3"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"5.3 to 10"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"8.2"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"copper","name":"Copper","family":"metal","familyLabel":"Metals","casrn":"7440-50-8","whatItIs":"A metal that enters water from corroding household plumbing.","whyItMatters":"Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.","measured":{"value":0.226,"low":null,"high":null,"kind":"point","display":"0.226","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.226"},"federalStandard":{"type":"PHG","value":0.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Premises Above Action Level","rawVerbatim":"0"},{"value":0.226,"low":null,"high":null,"kind":"point","display":"0.226","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.226"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","value":0.2,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":30,"low":null,"high":null,"kind":"point","display":"30","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Premises Sampled","rawVerbatim":"30"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Premises Above Action Level","rawVerbatim":"0"}]},{"analyteId":"lithium","name":"Lithium","family":"metal","familyLabel":"Metals","casrn":"7439-93-2","whatItIs":"A naturally occurring element found in some groundwater.","whyItMatters":"No enforceable federal limit; on the EPA contaminant candidate list for further study.","measured":{"value":40,"low":null,"high":null,"kind":"point","display":"40","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"40 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"32 to 47 ppb"},{"value":40,"low":null,"high":null,"kind":"point","display":"40","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"40 ppb"}]}]},{"family":"microbial","familyLabel":"Microbial","contaminants":[{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","rawVerbatim":"0"}]},{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","censored":false,"detectionLimit":null,"rawVerbatim":"3.09 %"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","rawVerbatim":"3.09 %"}]}]},{"family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","contaminants":[{"analyteId":"pfbs","name":"Perfluorobutanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-73-5","whatItIs":"Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.","measured":{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":null,"high":null,"kind":"point","display":"0.8","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 0.8 ppt"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1 ppt"}]},{"analyteId":"pfhxa","name":"Perfluorohexanoic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"307-24-4","whatItIs":"Perfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent and widely detected.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.2 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1.3 ppt"},{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.2 ppt"}]},{"analyteId":"pfpea","name":"Perfluoropentanoic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"2706-90-3","whatItIs":"Perfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment.","measured":{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.3 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.3 ppt"},{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1.3 ppt"}]},{"analyteId":"pfba","name":"PFBA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-22-4","whatItIs":"Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment and the human body.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 5 ppt"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1 ppt"}]},{"analyteId":"pfoa","name":"PFOA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"335-67-1","whatItIs":"Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.","whyItMatters":"Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1 ppt"},"federalStandard":{"type":"MCL","value":4,"units":"ng/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1 ppt"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1 ppt"}]},{"analyteId":"pfos","name":"PFOS","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"1763-23-1","whatItIs":"Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.","whyItMatters":"Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.2 ppt"},"federalStandard":{"type":"MCL","value":4,"units":"ng/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.2 ppt"},{"value":0.9,"low":null,"high":null,"kind":"point","display":"0.9","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 0.9 ppt"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"turbidity","name":"Turbidity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of cloudiness from suspended particles in the water.","whyItMatters":"High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.","measured":{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.06"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.06"}]}]},{"family":"radionuclide","familyLabel":"Radionuclides","contaminants":[{"analyteId":"gross_alpha","name":"Gross Alpha","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal limit increases cancer risk.","measured":{"value":0.95,"low":null,"high":null,"kind":"point","display":"0.95","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.95"},"federalStandard":{"type":"PHG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":0.95,"display":"0.95"},"range":{"low":null,"high":null,"display":"2.7"},"ratio":0.18000000000000002},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 2.7"},{"value":0.95,"low":null,"high":null,"kind":"point","display":"0.95","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.95"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"gross_beta","name":"Gross Beta Particle Activity","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross beta particle activity — a combined measure of beta-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal screening level increases cancer risk.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"PHG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":0,"high":5,"display":"0–5"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND – 5"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"uranium","name":"Uranium","family":"radionuclide","familyLabel":"Radionuclides","casrn":"7440-61-1","whatItIs":"A naturally occurring radioactive metal from erosion of natural deposits.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.","measured":{"value":2.65,"low":null,"high":null,"kind":"point","display":"2.65","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"2.65"},"federalStandard":{"type":"PHG","value":0.43,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":0,"high":3,"display":"0–3"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":2.65,"display":"2.65"},"range":{"low":null,"high":null,"display":"1"},"ratio":null}],"measurements":[{"value":2.65,"low":null,"high":null,"kind":"point","display":"2.65","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"2.65"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND - 3"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"1 to 8.7"}]}]},{"family":"voc_pesticide","familyLabel":"VOCs & pesticides","contaminants":[{"analyteId":"tcp123","name":"1,2,3-TCP","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"96-18-4","whatItIs":null,"whyItMatters":null,"measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"PHG","value":0.005,"units":"%","enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"tetrachloroethylene","name":"Tetrachloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"127-18-4","whatItIs":"An industrial solvent (PCE) used in dry cleaning and degreasing.","whyItMatters":"A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.","measured":{"value":0.44,"low":null,"high":null,"kind":"point","display":"0.44","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.44"},"federalStandard":{"type":"PHG","value":0.06,"units":"%","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"%","average":{"value":0.44,"display":"0.44"},"range":{"low":null,"high":null,"display":"2.7"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"%","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 2.7"},{"value":0.44,"low":null,"high":null,"kind":"point","display":"0.44","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.44"}]}]}],"contaminants":[{"analyteId":"chlorine","name":"Chlorine","family":"disinfectant","familyLabel":"Disinfectants","casrn":null,"whatItIs":"A disinfectant added to drinking water to kill bacteria and viruses.","whyItMatters":"Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.","measured":{"value":1.53,"low":1.17,"high":1.53,"kind":"range","display":"1.17–1.53","units":"mg/L","statisticType":"range","samplingContext":"plant:Range Detected","censored":false,"detectionLimit":null,"rawVerbatim":"1.17 – 1.53"},"federalStandard":{"type":"MRDLG","value":4,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.53,"low":1.17,"high":1.53,"kind":"range","display":"1.17–1.53","units":"mg/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"1.17 – 1.53"},{"value":1.17,"low":null,"high":null,"kind":"point","display":"1.17","units":"mg/L","statisticType":"min","samplingContext":"plant:Chlorine Residual","rawVerbatim":"1.17"},{"value":1.31,"low":null,"high":null,"kind":"point","display":"1.31","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"1.31"}]},{"analyteId":"haa5","name":"HAA5","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.","whyItMatters":"Long-term exposure above the federal limit is associated with an increased cancer risk.","measured":{"value":2.3,"low":null,"high":null,"kind":"point","display":"2.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.3"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.3,"low":null,"high":null,"kind":"point","display":"2.3","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","rawVerbatim":"2.3"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"0 to 5.5"}]},{"analyteId":"perchlorate","name":"Perchlorate","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14797-73-0","whatItIs":"A chemical used in rocket fuel and fireworks that can also form during disinfection.","whyItMatters":"Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.","measured":{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"PHG","value":1,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0.81,"display":"0.81"},"range":{"low":null,"high":null,"display":"1.5"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.81"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1.5,"low":null,"high":null,"kind":"point","display":"1.5","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 1.5"}]},{"analyteId":"tthm","name":"TTHM","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.","whyItMatters":"Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.","measured":{"value":13.4,"low":null,"high":null,"kind":"point","display":"13.4","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"13.4"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":13.4,"low":null,"high":null,"kind":"point","display":"13.4","units":"ug/L","statisticType":"running_annual_avg","samplingContext":"system","rawVerbatim":"13.4"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"range","samplingContext":"plant:Range Detected","rawVerbatim":"0 to 29"}]},{"analyteId":"fluoride","name":"Fluoride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16984-48-8","whatItIs":"A mineral often added to drinking water to help prevent tooth decay.","whyItMatters":"Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.","measured":{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.81"},"federalStandard":{"type":"PHG","value":1,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"mg/L","average":{"value":0.81,"display":"0.81"},"range":{"low":null,"high":null,"display":"0.62"},"ratio":0.2025},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"mg/L","average":{"value":0.7,"display":"0.7"},"range":{"low":0.3,"high":0.8,"display":"0.3–0.8"},"ratio":0.2}],"measurements":[{"value":0.8,"low":0.3,"high":0.8,"kind":"range","display":"0.3–0.8","units":"mg/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"0.3 – 0.8"},{"value":0.7,"low":null,"high":null,"kind":"point","display":"0.7","units":"mg/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"0.7"},{"value":0.81,"low":null,"high":null,"kind":"point","display":"0.81","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.81"},{"value":0.62,"low":null,"high":null,"kind":"point","display":"0.62","units":"mg/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.62 to 0.96"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14797-55-8","whatItIs":"A compound from fertilizer runoff, septic systems, and erosion of natural deposits.","whyItMatters":"Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.","measured":{"value":2.9,"low":null,"high":null,"kind":"point","display":"2.9","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"2.9"},"federalStandard":{"type":"PHG","value":10,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"mg/L","average":{"value":2.9,"display":"2.9"},"range":{"low":null,"high":null,"display":"1.1"},"ratio":0.29},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"mg/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":2.9,"low":null,"high":null,"kind":"point","display":"2.9","units":"mg/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"2.9"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1.1,"low":null,"high":null,"kind":"point","display":"1.1","units":"mg/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"1.1 to 4.4"}]},{"analyteId":"aluminum","name":"Aluminum","family":"metal","familyLabel":"Metals","casrn":"7429-90-5","whatItIs":"A common element sometimes used as a treatment coagulant.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels can discolor water.","measured":{"value":93,"low":null,"high":null,"kind":"point","display":"93","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","censored":false,"detectionLimit":null,"rawVerbatim":"93*"},"federalStandard":{"type":"PHG","value":600,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":93,"display":"93"},"range":{"low":0,"high":150,"display":"0–150"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":93,"low":null,"high":null,"kind":"point","display":"93","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"93*"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":150,"low":0,"high":150,"kind":"range","display":"0–150","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND - 150"}]},{"analyteId":"arsenic","name":"Arsenic","family":"metal","familyLabel":"Metals","casrn":"7440-38-2","whatItIs":"A naturally occurring element that also enters water from industry and agriculture.","whyItMatters":"A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.","measured":{"value":0.61,"low":null,"high":null,"kind":"point","display":"0.61","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.61"},"federalStandard":{"type":"PHG","value":0.004,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":0.61,"display":"0.61"},"range":{"low":null,"high":null,"display":"3.1"},"ratio":0.31000000000000005},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":3.1,"low":null,"high":null,"kind":"point","display":"3.1","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 3.1"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0.61,"low":null,"high":null,"kind":"point","display":"0.61","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.61"}]},{"analyteId":"chromium_hex","name":"Chromium, Hexavalent","family":"metal","familyLabel":"Metals","casrn":"18540-29-9","whatItIs":"Hexavalent chromium ('chromium-6') — the more toxic form of chromium.","whyItMatters":"A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.","measured":{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"8.2"},"federalStandard":{"type":"PHG","value":0.02,"units":"ug/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"ug/L","average":{"value":8.2,"display":"8.2"},"range":{"low":null,"high":null,"display":"5.3"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"ug/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"ug/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"5.3 to 10"},{"value":8.2,"low":null,"high":null,"kind":"point","display":"8.2","units":"ug/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"8.2"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"copper","name":"Copper","family":"metal","familyLabel":"Metals","casrn":"7440-50-8","whatItIs":"A metal that enters water from corroding household plumbing.","whyItMatters":"Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.","measured":{"value":0.226,"low":null,"high":null,"kind":"point","display":"0.226","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.226"},"federalStandard":{"type":"PHG","value":0.3,"units":"mg/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Premises Above Action Level","rawVerbatim":"0"},{"value":0.226,"low":null,"high":null,"kind":"point","display":"0.226","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.226"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":"7439-92-1","whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","value":0.2,"units":"ug/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":30,"low":null,"high":null,"kind":"point","display":"30","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of Premises Sampled","rawVerbatim":"30"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Premises Above Action Level","rawVerbatim":"0"}]},{"analyteId":"lithium","name":"Lithium","family":"metal","familyLabel":"Metals","casrn":"7439-93-2","whatItIs":"A naturally occurring element found in some groundwater.","whyItMatters":"No enforceable federal limit; on the EPA contaminant candidate list for further study.","measured":{"value":40,"low":null,"high":null,"kind":"point","display":"40","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"40 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"32 to 47 ppb"},{"value":40,"low":null,"high":null,"kind":"point","display":"40","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"40 ppb"}]},{"analyteId":"ecoli","name":"Escherichia coli (E. coli)","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"Escherichia coli — bacteria found in the gut of humans and animals.","whyItMatters":"Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","rawVerbatim":"0"}]},{"analyteId":"total_coliform","name":"Total Coliform","family":"microbial","familyLabel":"Microbial","casrn":null,"whatItIs":"A group of bacteria used as an indicator of overall water-system sanitation.","whyItMatters":"Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.","measured":{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","censored":false,"detectionLimit":null,"rawVerbatim":"3.09 %"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"max_single","samplingContext":"plant:Percentage","rawVerbatim":"3.09 %"}]},{"analyteId":"pfbs","name":"Perfluorobutanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-73-5","whatItIs":"Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.","measured":{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.8,"low":null,"high":null,"kind":"point","display":"0.8","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 0.8 ppt"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1 ppt"}]},{"analyteId":"pfhxa","name":"Perfluorohexanoic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"307-24-4","whatItIs":"Perfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent and widely detected.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.2 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1.3 ppt"},{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.2 ppt"}]},{"analyteId":"pfpea","name":"Perfluoropentanoic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"2706-90-3","whatItIs":"Perfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment.","measured":{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.3 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.3,"low":null,"high":null,"kind":"point","display":"0.3","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.3 ppt"},{"value":1.3,"low":null,"high":null,"kind":"point","display":"1.3","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1.3 ppt"}]},{"analyteId":"pfba","name":"PFBA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-22-4","whatItIs":"Perfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Monitored under EPA rules; persistent in the environment and the human body.","measured":{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1 ppt"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 5 ppt"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1 ppt"}]},{"analyteId":"pfoa","name":"PFOA","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"335-67-1","whatItIs":"Perfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.","whyItMatters":"Linked to cancer, liver damage, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.1 ppt"},"federalStandard":{"type":"MCL","value":4,"units":"ng/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.1 ppt"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 1 ppt"}]},{"analyteId":"pfos","name":"PFOS","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"1763-23-1","whatItIs":"Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.","whyItMatters":"Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.","measured":{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.2 ppt"},"federalStandard":{"type":"MCL","value":4,"units":"ng/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.2,"low":null,"high":null,"kind":"point","display":"0.2","units":"ng/L","statisticType":"average","samplingContext":"system","rawVerbatim":"0.2 ppt"},{"value":0.9,"low":null,"high":null,"kind":"point","display":"0.9","units":"ng/L","statisticType":"range","samplingContext":"system","rawVerbatim":"ND to 0.9 ppt"}]},{"analyteId":"turbidity","name":"Turbidity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of cloudiness from suspended particles in the water.","whyItMatters":"High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.","measured":{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.06"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.06,"low":null,"high":null,"kind":"point","display":"0.06","units":"NTU","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.06"}]},{"analyteId":"gross_alpha","name":"Gross Alpha","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal limit increases cancer risk.","measured":{"value":0.95,"low":null,"high":null,"kind":"point","display":"0.95","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.95"},"federalStandard":{"type":"PHG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":0.95,"display":"0.95"},"range":{"low":null,"high":null,"display":"2.7"},"ratio":0.18000000000000002},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":0}],"measurements":[{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 2.7"},{"value":0.95,"low":null,"high":null,"kind":"point","display":"0.95","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.95"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"gross_beta","name":"Gross Beta Particle Activity","family":"radionuclide","familyLabel":"Radionuclides","casrn":null,"whatItIs":"Gross beta particle activity — a combined measure of beta-emitting radioactive substances.","whyItMatters":"Long-term exposure above the federal screening level increases cancer risk.","measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"PHG","value":0,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":0,"high":5,"display":"0–5"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":5,"low":0,"high":5,"kind":"range","display":"0–5","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND – 5"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"uranium","name":"Uranium","family":"radionuclide","familyLabel":"Radionuclides","casrn":"7440-61-1","whatItIs":"A naturally occurring radioactive metal from erosion of natural deposits.","whyItMatters":"Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.","measured":{"value":2.65,"low":null,"high":null,"kind":"point","display":"2.65","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"2.65"},"federalStandard":{"type":"PHG","value":0.43,"units":"pCi/L","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"pCi/L","average":{"value":0,"display":"Not detected"},"range":{"low":0,"high":3,"display":"0–3"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"pCi/L","average":{"value":2.65,"display":"2.65"},"range":{"low":null,"high":null,"display":"1"},"ratio":null}],"measurements":[{"value":2.65,"low":null,"high":null,"kind":"point","display":"2.65","units":"pCi/L","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"2.65"},{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"pCi/L","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND - 3"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"pCi/L","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"pCi/L","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"1 to 8.7"}]},{"analyteId":"tcp123","name":"1,2,3-TCP","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"96-18-4","whatItIs":null,"whyItMatters":null,"measured":{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"PHG","value":0.005,"units":"%","enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null},{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"}]},{"analyteId":"tetrachloroethylene","name":"Tetrachloroethylene","family":"voc_pesticide","familyLabel":"VOCs & pesticides","casrn":"127-18-4","whatItIs":"An industrial solvent (PCE) used in dry cleaning and degreasing.","whyItMatters":"A likely human carcinogen; long-term exposure above the federal limit can damage the liver and kidneys.","measured":{"value":0.44,"low":null,"high":null,"kind":"point","display":"0.44","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","censored":false,"detectionLimit":null,"rawVerbatim":"0.44"},"federalStandard":{"type":"PHG","value":0.06,"units":"%","enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:San Marino Distribution System","label":"San Marino Distribution System","kind":"zone","units":"%","average":{"value":0.44,"display":"0.44"},"range":{"low":null,"high":null,"display":"2.7"},"ratio":null},{"context":"plant:MWD Weymouth","label":"MWD Weymouth","kind":"plant","units":"%","average":{"value":0,"display":"Not detected"},"range":{"low":null,"high":null,"display":"Not detected"},"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"average","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"%","statisticType":"range","samplingContext":"plant:MWD Weymouth","rawVerbatim":"ND"},{"value":2.7,"low":null,"high":null,"kind":"point","display":"2.7","units":"%","statisticType":"range","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"ND to 2.7"},{"value":0.44,"low":null,"high":null,"kind":"point","display":"0.44","units":"%","statisticType":"average","samplingContext":"zone:San Marino Distribution System","rawVerbatim":"0.44"}]}]}}