{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:53:12.847Z"},"system":{"slug":"ca__arrowhead-villas-mutual-service-company__CA3610093","name":"Arrowhead Villas Mutual Service Company — Skyforest, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/arrowhead-villas-mutual-service-company-skyforest-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/arrowhead-villas-mutual-service-company-skyforest-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/arrowhead-villas-mutual-service-company-skyforest-ca/2023/llms.txt","coordinates":{"latitude":34.2354166,"longitude":-117.1792338},"contaminantsMeasured":19,"contaminantsWithFederalLimit":5,"contaminantsAtOrAboveLimit":1,"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":1.73,"low":0.16,"high":1.73,"kind":"range","display":"0.16–1.73","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0.16 - 1.73"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.02,"low":null,"high":null,"kind":"point","display":"1.02","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"1.02"},{"value":1.73,"low":0.16,"high":1.73,"kind":"range","display":"0.16–1.73","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"0.16 - 1.73"}]}]},{"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":7.7,"low":0,"high":7.7,"kind":"range","display":"0–7.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"0.0 - 7.7"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":7.7,"display":"0–7.7"},"ratio":0.12833333333333335},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":3,"display":"0–3"},"ratio":0.05}],"measurements":[{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 3"},{"value":7.7,"low":0,"high":7.7,"kind":"range","display":"0–7.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.0 - 7.7"},{"value":0.525,"low":null,"high":null,"kind":"point","display":"0.525","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.525"},{"value":4.4,"low":null,"high":null,"kind":"point","display":"4.4","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"4.4"}]},{"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":93.7,"low":16,"high":93.7,"kind":"range","display":"16–93.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"16.0 - 93.7"},"federalStandard":null,"status":{"key":"over","label":"At or above the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"ug/L","average":null,"range":{"low":16,"high":93.7,"display":"16–93.7"},"ratio":1.1712500000000001},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":30.1,"display":"0–30.1"},"ratio":0.37625000000000003}],"measurements":[{"value":30.1,"low":0,"high":30.1,"kind":"range","display":"0–30.1","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 30.1"},{"value":93.7,"low":16,"high":93.7,"kind":"range","display":"16–93.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"16.0 - 93.7"},{"value":6.34,"low":null,"high":null,"kind":"point","display":"6.34","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"6.34"},{"value":49.3,"low":null,"high":null,"kind":"point","display":"49.3","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"49.3"}]}]},{"family":"inorganic","familyLabel":"Inorganic chemicals","contaminants":[{"analyteId":"chloride","name":"Chloride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16887-00-6","whatItIs":"A naturally occurring salt compound.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.","measured":{"value":74,"low":41,"high":74,"kind":"range","display":"41–74","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"41 - 74"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":41,"high":74,"display":"41–74"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":10,"high":21,"display":"10–21"},"ratio":null}],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"10"},{"value":21,"low":10,"high":21,"kind":"range","display":"10–21","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"10 - 21"},{"value":56.69,"low":null,"high":null,"kind":"point","display":"56.69","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"56.69"},{"value":74,"low":41,"high":74,"kind":"range","display":"41–74","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"41 - 74"}]},{"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":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":null,"ratio":0.1},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":0,"high":0.62,"display":"0–0.62"},"ratio":0.062}],"measurements":[{"value":0.21,"low":null,"high":null,"kind":"point","display":"0.21","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.21"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"1"},{"value":0.62,"low":0,"high":0.62,"kind":"range","display":"0–0.62","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.0 - 0.62"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":49,"low":28,"high":49,"kind":"range","display":"28–49","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"28 - 49"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":28,"high":49,"display":"28–49"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":8.2,"high":9,"display":"8.2–9"},"ratio":null}],"measurements":[{"value":9,"low":8.2,"high":9,"kind":"range","display":"8.2–9","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"8.2 - 9"},{"value":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"9"},{"value":40.94,"low":null,"high":null,"kind":"point","display":"40.94","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"40.94"},{"value":49,"low":28,"high":49,"kind":"range","display":"28–49","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"28 - 49"}]}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND"}]},{"analyteId":"boron","name":"Boron","family":"metal","familyLabel":"Metals","casrn":"7440-42-8","whatItIs":"A naturally occurring element from rock and soil.","whyItMatters":"No enforceable federal limit; the EPA has issued a health advisory level.","measured":{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0-160"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0-160"},{"value":100,"low":null,"high":null,"kind":"point","display":"100","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"100"},{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0-160"},{"value":100,"low":null,"high":null,"kind":"point","display":"100","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"100"}]},{"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":0.16,"low":0.14,"high":0.16,"kind":"range","display":"0.14–0.16","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0.14 -0.16"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.16,"low":0.14,"high":0.16,"kind":"range","display":"0.14–0.16","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"0.14 -0.16"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.14"}]},{"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":41,"low":null,"high":null,"kind":"point","display":"41","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"41"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":41,"low":null,"high":null,"kind":"point","display":"41","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"41"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":0.332,"low":null,"high":null,"kind":"point","display":"0.332","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.332"}]},{"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":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.9"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.01,"low":null,"high":null,"kind":"point","display":"0.01","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.01"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.9"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"}]},{"analyteId":"vanadium","name":"Vanadium","family":"metal","familyLabel":"Metals","casrn":"7440-62-2","whatItIs":null,"whyItMatters":null,"measured":{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 5.2"},"federalStandard":null,"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":"reported_level","samplingContext":"system","rawVerbatim":"3.09"},{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 5.2"},{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 5.2"},{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"3.09"}]}]},{"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":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"","average":null,"range":null,"ratio":null},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","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":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"%","average":null,"range":null,"ratio":null},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"%","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"ph","name":"pH","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how acidic or basic the water is.","whyItMatters":"Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.","measured":{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.8 - 8.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.06,"low":null,"high":null,"kind":"point","display":"8.06","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.06"},{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.8 - 8.5"},{"value":8.06,"low":null,"high":null,"kind":"point","display":"8.06","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.06"},{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.8 - 8.5"}]},{"analyteId":"tds","name":"Total Dissolved Solids","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total dissolved solids — the combined content of all dissolved minerals and salts.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.","measured":{"value":300,"low":160,"high":300,"kind":"range","display":"160–300","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"160 - 300"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":160,"high":300,"display":"160–300"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":170,"high":200,"display":"170–200"},"ratio":null}],"measurements":[{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"170"},{"value":226.9,"low":null,"high":null,"kind":"point","display":"226.9","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"226.9"},{"value":300,"low":160,"high":300,"kind":"range","display":"160–300","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"160 - 300"},{"value":200,"low":170,"high":200,"kind":"range","display":"170–200","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"170-200"}]},{"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":0.57,"low":0.11,"high":0.57,"kind":"range","display":"0.11–0.57","units":"NTU","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"0.11 - 0.57"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"NTU","average":null,"range":{"low":0.11,"high":0.57,"display":"0.11–0.57"},"ratio":0.57},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"NTU","average":null,"range":{"low":0,"high":0.28,"display":"0–0.28"},"ratio":0.28}],"measurements":[{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.18"},{"value":0.28,"low":0,"high":0.28,"kind":"range","display":"0–0.28","units":"NTU","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 0.28"},{"value":0.57,"low":0.11,"high":0.57,"kind":"range","display":"0.11–0.57","units":"NTU","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.11 - 0.57"},{"value":0.16,"low":null,"high":null,"kind":"point","display":"0.16","units":"NTU","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.16"}]}]},{"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":7.4,"low":null,"high":null,"kind":"point","display":"7.4","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"7.4"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7.4,"low":null,"high":null,"kind":"point","display":"7.4","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"7.4"}]},{"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":23,"low":9.5,"high":23,"kind":"range","display":"9.5–23","units":"pCi/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"9.5 -23"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":15,"low":null,"high":null,"kind":"point","display":"15","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"15"},{"value":23,"low":9.5,"high":23,"kind":"range","display":"9.5–23","units":"pCi/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"9.5 -23"}]}]}],"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":1.73,"low":0.16,"high":1.73,"kind":"range","display":"0.16–1.73","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0.16 - 1.73"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.02,"low":null,"high":null,"kind":"point","display":"1.02","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"1.02"},{"value":1.73,"low":0.16,"high":1.73,"kind":"range","display":"0.16–1.73","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"0.16 - 1.73"}]},{"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":7.7,"low":0,"high":7.7,"kind":"range","display":"0–7.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"0.0 - 7.7"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":7.7,"display":"0–7.7"},"ratio":0.12833333333333335},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":3,"display":"0–3"},"ratio":0.05}],"measurements":[{"value":3,"low":0,"high":3,"kind":"range","display":"0–3","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 3"},{"value":7.7,"low":0,"high":7.7,"kind":"range","display":"0–7.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.0 - 7.7"},{"value":0.525,"low":null,"high":null,"kind":"point","display":"0.525","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.525"},{"value":4.4,"low":null,"high":null,"kind":"point","display":"4.4","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"4.4"}]},{"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":93.7,"low":16,"high":93.7,"kind":"range","display":"16–93.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"16.0 - 93.7"},"federalStandard":null,"status":{"key":"over","label":"At or above the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"ug/L","average":null,"range":{"low":16,"high":93.7,"display":"16–93.7"},"ratio":1.1712500000000001},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"ug/L","average":null,"range":{"low":0,"high":30.1,"display":"0–30.1"},"ratio":0.37625000000000003}],"measurements":[{"value":30.1,"low":0,"high":30.1,"kind":"range","display":"0–30.1","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 30.1"},{"value":93.7,"low":16,"high":93.7,"kind":"range","display":"16–93.7","units":"ug/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"16.0 - 93.7"},{"value":6.34,"low":null,"high":null,"kind":"point","display":"6.34","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"6.34"},{"value":49.3,"low":null,"high":null,"kind":"point","display":"49.3","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"49.3"}]},{"analyteId":"chloride","name":"Chloride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"16887-00-6","whatItIs":"A naturally occurring salt compound.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.","measured":{"value":74,"low":41,"high":74,"kind":"range","display":"41–74","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"41 - 74"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":41,"high":74,"display":"41–74"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":10,"high":21,"display":"10–21"},"ratio":null}],"measurements":[{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"10"},{"value":21,"low":10,"high":21,"kind":"range","display":"10–21","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"10 - 21"},{"value":56.69,"low":null,"high":null,"kind":"point","display":"56.69","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"56.69"},{"value":74,"low":41,"high":74,"kind":"range","display":"41–74","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"41 - 74"}]},{"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":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"1"},"federalStandard":{"type":"MCL","value":10,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":null,"ratio":0.1},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":0,"high":0.62,"display":"0–0.62"},"ratio":0.062}],"measurements":[{"value":0.21,"low":null,"high":null,"kind":"point","display":"0.21","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.21"},{"value":1,"low":null,"high":null,"kind":"point","display":"1","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"1"},{"value":0.62,"low":0,"high":0.62,"kind":"range","display":"0–0.62","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.0 - 0.62"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":"14808-79-8","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"No health-based federal limit; high levels can have a laxative effect and a bitter taste.","measured":{"value":49,"low":28,"high":49,"kind":"range","display":"28–49","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"28 - 49"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":28,"high":49,"display":"28–49"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":8.2,"high":9,"display":"8.2–9"},"ratio":null}],"measurements":[{"value":9,"low":8.2,"high":9,"kind":"range","display":"8.2–9","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"8.2 - 9"},{"value":9,"low":null,"high":null,"kind":"point","display":"9","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"9"},{"value":40.94,"low":null,"high":null,"kind":"point","display":"40.94","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"40.94"},{"value":49,"low":28,"high":49,"kind":"range","display":"28–49","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"28 - 49"}]},{"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":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"ND"},{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND"}]},{"analyteId":"boron","name":"Boron","family":"metal","familyLabel":"Metals","casrn":"7440-42-8","whatItIs":"A naturally occurring element from rock and soil.","whyItMatters":"No enforceable federal limit; the EPA has issued a health advisory level.","measured":{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0-160"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0-160"},{"value":100,"low":null,"high":null,"kind":"point","display":"100","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"100"},{"value":160,"low":0,"high":160,"kind":"range","display":"0–160","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0-160"},{"value":100,"low":null,"high":null,"kind":"point","display":"100","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"100"}]},{"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":0.16,"low":0.14,"high":0.16,"kind":"range","display":"0.14–0.16","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0.14 -0.16"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.16,"low":0.14,"high":0.16,"kind":"range","display":"0.14–0.16","units":"ug/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"0.14 -0.16"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"ug/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.14"}]},{"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":41,"low":null,"high":null,"kind":"point","display":"41","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"41"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":41,"low":null,"high":null,"kind":"point","display":"41","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"41"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":0.332,"low":null,"high":null,"kind":"point","display":"0.332","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.332"}]},{"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":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.9"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.01,"low":null,"high":null,"kind":"point","display":"0.01","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.01"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"},{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.9"},{"value":10,"low":null,"high":null,"kind":"point","display":"10","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:No. of samples collected","rawVerbatim":"10"}]},{"analyteId":"vanadium","name":"Vanadium","family":"metal","familyLabel":"Metals","casrn":"7440-62-2","whatItIs":null,"whyItMatters":null,"measured":{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0 - 5.2"},"federalStandard":null,"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":"reported_level","samplingContext":"system","rawVerbatim":"3.09"},{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 5.2"},{"value":5.2,"low":0,"high":5.2,"kind":"range","display":"0–5.2","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"0 - 5.2"},{"value":3.09,"low":null,"high":null,"kind":"point","display":"3.09","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"3.09"}]},{"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":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","value":0,"units":null,"enforceable":false},"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"","average":null,"range":null,"ratio":null},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","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":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"%","average":null,"range":null,"ratio":null},{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"%","average":null,"range":null,"ratio":null}],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":"%","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0"}]},{"analyteId":"ph","name":"pH","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how acidic or basic the water is.","whyItMatters":"Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.","measured":{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.8 - 8.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.06,"low":null,"high":null,"kind":"point","display":"8.06","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.06"},{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.8 - 8.5"},{"value":8.06,"low":null,"high":null,"kind":"point","display":"8.06","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"8.06"},{"value":8.5,"low":7.8,"high":8.5,"kind":"range","display":"7.8–8.5","units":null,"statisticType":"range","samplingContext":"system","rawVerbatim":"7.8 - 8.5"}]},{"analyteId":"tds","name":"Total Dissolved Solids","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total dissolved solids — the combined content of all dissolved minerals and salts.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.","measured":{"value":300,"low":160,"high":300,"kind":"range","display":"160–300","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"160 - 300"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"mg/L","average":null,"range":{"low":160,"high":300,"display":"160–300"},"ratio":null},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"mg/L","average":null,"range":{"low":170,"high":200,"display":"170–200"},"ratio":null}],"measurements":[{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"170"},{"value":226.9,"low":null,"high":null,"kind":"point","display":"226.9","units":"mg/L","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"226.9"},{"value":300,"low":160,"high":300,"kind":"range","display":"160–300","units":"mg/L","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"160 - 300"},{"value":200,"low":170,"high":200,"kind":"range","display":"170–200","units":"mg/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"170-200"}]},{"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":0.57,"low":0.11,"high":0.57,"kind":"range","display":"0.11–0.57","units":"NTU","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","censored":false,"detectionLimit":null,"rawVerbatim":"0.11 - 0.57"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[{"context":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","label":"Crestline-Lake Arrowhead Water Agency (CLAWA)","kind":"zone","units":"NTU","average":null,"range":{"low":0.11,"high":0.57,"display":"0.11–0.57"},"ratio":0.57},{"context":"zone:AVMSC","label":"Avmsc","kind":"zone","units":"NTU","average":null,"range":{"low":0,"high":0.28,"display":"0–0.28"},"ratio":0.28}],"measurements":[{"value":0.18,"low":null,"high":null,"kind":"point","display":"0.18","units":"NTU","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"0.18"},{"value":0.28,"low":0,"high":0.28,"kind":"range","display":"0–0.28","units":"NTU","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"ND - 0.28"},{"value":0.57,"low":0.11,"high":0.57,"kind":"range","display":"0.11–0.57","units":"NTU","statisticType":"range","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.11 - 0.57"},{"value":0.16,"low":null,"high":null,"kind":"point","display":"0.16","units":"NTU","statisticType":"reported_level","samplingContext":"zone:Crestline-Lake Arrowhead Water Agency (CLAWA)","rawVerbatim":"0.16"}]},{"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":7.4,"low":null,"high":null,"kind":"point","display":"7.4","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"7.4"},"federalStandard":{"type":"MCL","value":15,"units":"pCi/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":7.4,"low":null,"high":null,"kind":"point","display":"7.4","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"7.4"}]},{"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":23,"low":9.5,"high":23,"kind":"range","display":"9.5–23","units":"pCi/L","statisticType":"range","samplingContext":"zone:AVMSC","censored":false,"detectionLimit":null,"rawVerbatim":"9.5 -23"},"federalStandard":{"type":"MCL","value":20,"units":"pCi/L","enforceable":true},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":15,"low":null,"high":null,"kind":"point","display":"15","units":"pCi/L","statisticType":"reported_level","samplingContext":"zone:AVMSC","rawVerbatim":"15"},{"value":23,"low":9.5,"high":23,"kind":"range","display":"9.5–23","units":"pCi/L","statisticType":"range","samplingContext":"zone:AVMSC","rawVerbatim":"9.5 -23"}]}]}}