{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-06-04T01:30:07.334Z"},"system":{"slug":"ca__el-centro-city-of__CA1310004","name":"El Centro, City of — El Centro, Ca","state":"CA","year":2023,"url":"https://www.thewatermap.com/water/ca/el-centro-el-centro-ca/2023","apiUrl":"https://www.thewatermap.com/api/water/ca/el-centro-el-centro-ca/2023","markdownUrl":"https://www.thewatermap.com/water/ca/el-centro-el-centro-ca/2023/llms.txt","coordinates":{"latitude":32.792,"longitude":-115.563051},"contaminantsMeasured":22,"contaminantsWithFederalLimit":5,"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":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.7"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.7,"low":1.6,"high":1.7,"kind":"range","display":"1.6–1.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.6-1.7"},{"value":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.7"}]}]},{"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":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"29 (Highest LRAA)"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"29 (Highest LRAA)"},{"value":43.1,"low":15.6,"high":43.1,"kind":"range","display":"15.6–43.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"15.6 - 43.1"}]},{"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":62,"low":null,"high":null,"kind":"point","display":"62","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"62 (Highest LRAA)"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":70.7,"low":40.6,"high":70.7,"kind":"range","display":"40.6–70.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"40.6 - 70.7"},{"value":62,"low":null,"high":null,"kind":"point","display":"62","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"62 (Highest LRAA)"}]}]},{"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":0.36,"low":null,"high":null,"kind":"point","display":"0.36","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":".36/.31"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.36,"low":null,"high":null,"kind":"point","display":"0.36","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":".36/.31"}]}]},{"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":70,"low":null,"high":null,"kind":"point","display":"70","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"70/62"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"70/62"}]},{"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":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.2/2.4"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"2.2/2.4"}]},{"analyteId":"barium","name":"Barium","family":"metal","familyLabel":"Metals","casrn":"7440-39-3","whatItIs":"A metal from erosion of natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can raise blood pressure.","measured":{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"120/120"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"}]},{"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":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"170/180"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"170/180"},{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"170/180"}]},{"analyteId":"calcium","name":"Calcium","family":"metal","familyLabel":"Metals","casrn":"7440-70-2","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"84/88"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"84/88"},{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"84/88"}]},{"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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"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":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"},{"value":30,"low":null,"high":null,"kind":"point","display":"30","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Samples Collected","rawVerbatim":"30"}]},{"analyteId":"magnesium","name":"Magnesium","family":"metal","familyLabel":"Metals","casrn":"7439-95-4","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"32/31"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"32/31"},{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"32/31"}]},{"analyteId":"potassium","name":"Potassium","family":"metal","familyLabel":"Metals","casrn":"7440-09-7","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"Not federally regulated for health.","measured":{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.3/5.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.3/5.5"},{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.3/5.5"}]},{"analyteId":"sodium","name":"Sodium","family":"metal","familyLabel":"Metals","casrn":"7440-23-5","whatItIs":"A naturally occurring salt component.","whyItMatters":"Not federally regulated for health; relevant for people on sodium-restricted diets.","measured":{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"120/120"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"},{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"}]}]},{"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:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In a month) 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:No. of Detections","rawVerbatim":"(In a month) 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":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In a month) 0"},"federalStandard":null,"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:No. of Detections","rawVerbatim":"(In a month) 0"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4 quarters"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4 quarters"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"alkalinity","name":"Alkalinity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of the water's capacity to neutralize acids.","whyItMatters":"Not federally regulated for health; relevant to corrosion control and treatment.","measured":{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"140/150"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"140/150"},{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"140/150"}]},{"analyteId":"bicarbonate","name":"Bicarbonate","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":"71-52-3","whatItIs":null,"whyItMatters":null,"measured":{"value":180,"low":null,"high":null,"kind":"point","display":"180","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"180/180"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":180,"low":null,"high":null,"kind":"point","display":"180","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"180/180"}]},{"analyteId":"hardness","name":"Hardness","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of dissolved calcium and magnesium minerals.","whyItMatters":"Not federally regulated for health; affects scaling, soap use, and taste.","measured":{"value":340,"low":null,"high":null,"kind":"point","display":"340","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"340/350"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":340,"low":null,"high":null,"kind":"point","display":"340","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"340/350"}]},{"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":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.7/8.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.7/8.4"},{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.7/8.4"}]},{"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":0.04,"low":null,"high":null,"kind":"point","display":"0.04","units":"NTU","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.04"},"federalStandard":{"type":"TT","value":1,"units":"NTU","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.04,"low":null,"high":null,"kind":"point","display":"0.04","units":"NTU","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.04"}]}]}],"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":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"mg/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"1.7"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.7,"low":1.6,"high":1.7,"kind":"range","display":"1.6–1.7","units":"mg/L","statisticType":"range","samplingContext":"system","rawVerbatim":"1.6-1.7"},{"value":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"mg/L","statisticType":"average","samplingContext":"system","rawVerbatim":"1.7"}]},{"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":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"29 (Highest LRAA)"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"29 (Highest LRAA)"},{"value":43.1,"low":15.6,"high":43.1,"kind":"range","display":"15.6–43.1","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"15.6 - 43.1"}]},{"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":62,"low":null,"high":null,"kind":"point","display":"62","units":"ug/L","statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"62 (Highest LRAA)"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":70.7,"low":40.6,"high":70.7,"kind":"range","display":"40.6–70.7","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"40.6 - 70.7"},{"value":62,"low":null,"high":null,"kind":"point","display":"62","units":"ug/L","statisticType":"average","samplingContext":"system","rawVerbatim":"62 (Highest LRAA)"}]},{"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":0.36,"low":null,"high":null,"kind":"point","display":"0.36","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":".36/.31"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.36,"low":null,"high":null,"kind":"point","display":"0.36","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":".36/.31"}]},{"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":70,"low":null,"high":null,"kind":"point","display":"70","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"70/62"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":70,"low":null,"high":null,"kind":"point","display":"70","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"70/62"}]},{"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":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"2.2/2.4"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"2.2/2.4"}]},{"analyteId":"barium","name":"Barium","family":"metal","familyLabel":"Metals","casrn":"7440-39-3","whatItIs":"A metal from erosion of natural deposits and industrial discharge.","whyItMatters":"Long-term exposure above the federal limit can raise blood pressure.","measured":{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"120/120"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"}]},{"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":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"170/180"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"170/180"},{"value":170,"low":null,"high":null,"kind":"point","display":"170","units":"ug/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"170/180"}]},{"analyteId":"calcium","name":"Calcium","family":"metal","familyLabel":"Metals","casrn":"7440-70-2","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"84/88"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"84/88"},{"value":84,"low":null,"high":null,"kind":"point","display":"84","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"84/88"}]},{"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,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":{"type":"AL","value":1.3,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"}]},{"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":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","censored":true,"detectionLimit":null,"rawVerbatim":"ND"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"ug/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"ND"},{"value":30,"low":null,"high":null,"kind":"point","display":"30","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Samples Collected","rawVerbatim":"30"}]},{"analyteId":"magnesium","name":"Magnesium","family":"metal","familyLabel":"Metals","casrn":"7439-95-4","whatItIs":"A naturally occurring mineral that contributes to water hardness.","whyItMatters":"Not federally regulated for health; affects scaling and taste.","measured":{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"32/31"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"32/31"},{"value":32,"low":null,"high":null,"kind":"point","display":"32","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"32/31"}]},{"analyteId":"potassium","name":"Potassium","family":"metal","familyLabel":"Metals","casrn":"7440-09-7","whatItIs":"A naturally occurring mineral from rock and soil.","whyItMatters":"Not federally regulated for health.","measured":{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5.3/5.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.3/5.5"},{"value":5.3,"low":null,"high":null,"kind":"point","display":"5.3","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"5.3/5.5"}]},{"analyteId":"sodium","name":"Sodium","family":"metal","familyLabel":"Metals","casrn":"7440-23-5","whatItIs":"A naturally occurring salt component.","whyItMatters":"Not federally regulated for health; relevant for people on sodium-restricted diets.","measured":{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"120/120"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"},{"value":120,"low":null,"high":null,"kind":"point","display":"120","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"120/120"}]},{"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:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In a month) 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:No. of Detections","rawVerbatim":"(In a month) 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":null,"statisticType":"max_single","samplingContext":"plant:No. of Detections","censored":false,"detectionLimit":null,"rawVerbatim":"(In a month) 0"},"federalStandard":null,"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:No. of Detections","rawVerbatim":"(In a month) 0"}]},{"analyteId":"chromium","name":"Chromium","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"ug/L","statisticType":"range","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"4 quarters"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4,"low":null,"high":null,"kind":"point","display":"4","units":"ug/L","statisticType":"range","samplingContext":"system","rawVerbatim":"4 quarters"}]},{"analyteId":"alkalinity","name":"Alkalinity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of the water's capacity to neutralize acids.","whyItMatters":"Not federally regulated for health; relevant to corrosion control and treatment.","measured":{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"140/150"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"140/150"},{"value":140,"low":null,"high":null,"kind":"point","display":"140","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"140/150"}]},{"analyteId":"bicarbonate","name":"Bicarbonate","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":"71-52-3","whatItIs":null,"whyItMatters":null,"measured":{"value":180,"low":null,"high":null,"kind":"point","display":"180","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"180/180"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":180,"low":null,"high":null,"kind":"point","display":"180","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"180/180"}]},{"analyteId":"hardness","name":"Hardness","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of dissolved calcium and magnesium minerals.","whyItMatters":"Not federally regulated for health; affects scaling, soap use, and taste.","measured":{"value":340,"low":null,"high":null,"kind":"point","display":"340","units":"mg/L","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"340/350"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":340,"low":null,"high":null,"kind":"point","display":"340","units":"mg/L","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"340/350"}]},{"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":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.7/8.4"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.7/8.4"},{"value":7.7,"low":null,"high":null,"kind":"point","display":"7.7","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"7.7/8.4"}]},{"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":0.04,"low":null,"high":null,"kind":"point","display":"0.04","units":"NTU","statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.04"},"federalStandard":{"type":"TT","value":1,"units":"NTU","enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.04,"low":null,"high":null,"kind":"point","display":"0.04","units":"NTU","statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.04"}]}]}}