{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-25T20:27:04.666Z"},"system":{"slug":"metro__124__knoxville","name":"Knoxville","state":"TN","year":2024,"url":"https://www.thewatermap.com/water/tn/knoxville/2024","apiUrl":"https://www.thewatermap.com/api/water/tn/knoxville/2024","markdownUrl":"https://www.thewatermap.com/water/tn/knoxville/2024/llms.txt","coordinates":{"latitude":35.9603948,"longitude":-83.9210261},"contaminantsMeasured":24,"contaminantsWithFederalLimit":10,"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; 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The EPA sets an action level, not a health goal above zero.","measured":{"value":2.3,"low":1,"high":2.3,"kind":"range","display":"1–2.3","units":null,"statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.0 ppb (0.5 - 2.3 ppb)"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.3,"low":1,"high":2.3,"kind":"range","display":"1–2.3","units":null,"statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.0 ppb (0.5 - 2.3 ppb)"}]},{"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":11,"low":null,"high":null,"kind":"point","display":"11","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"11 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":11,"low":null,"high":null,"kind":"point","display":"11","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"11 ppm"}]},{"analyteId":"zinc","name":"Zinc","family":"metal","familyLabel":"Metals","casrn":"7440-66-6","whatItIs":"A naturally occurring metal that can also enter water from corroding pipes.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; 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relevant to corrosion control and treatment.","measured":{"value":74,"low":null,"high":null,"kind":"point","display":"74","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"74 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":74,"low":null,"high":null,"kind":"point","display":"74","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"74 ppm"}]},{"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":91,"low":null,"high":null,"kind":"point","display":"91","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"91 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":91,"low":null,"high":null,"kind":"point","display":"91","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"91 ppm"}]},{"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":7.3,"low":null,"high":null,"kind":"point","display":"7.3","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.3 Standard Units"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.3,"low":null,"high":null,"kind":"point","display":"7.3","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"7.3 Standard Units"}]},{"analyteId":"specific_conductance","name":"Specific Conductance","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how well water conducts electricity, which tracks dissolved mineral content.","whyItMatters":"Not federally regulated for health; used as a proxy for total dissolved solids.","measured":{"value":218,"low":null,"high":null,"kind":"point","display":"218","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"218 µmhos/cm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":218,"low":null,"high":null,"kind":"point","display":"218","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"218 µmhos/cm"}]},{"analyteId":"toc","name":"TOC","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total organic carbon — a measure of organic material dissolved in the water.","whyItMatters":"Not harmful itself, but it is the raw material that forms disinfection byproducts; removal is a treatment requirement.","measured":{"value":2.4,"low":1.9,"high":2.4,"kind":"range","display":"1.9–2.4","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"1.9 - 3.2 ppm (average 2.4 ppm)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.5,"low":1.2,"high":1.5,"kind":"range","display":"1.2–1.5","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"1.2 - 2.0 ppm (average 1.5 ppm)"},{"value":2.4,"low":1.9,"high":2.4,"kind":"range","display":"1.9–2.4","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"1.9 - 3.2 ppm (average 2.4 ppm)"}]},{"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":150,"low":null,"high":null,"kind":"point","display":"150","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"150 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":150,"low":null,"high":null,"kind":"point","display":"150","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"150 ppm"}]},{"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":0.09,"low":0.02,"high":0.09,"kind":"range","display":"0.02–0.09","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"0.02 - 0.09 NTU"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.09,"low":0.02,"high":0.09,"kind":"range","display":"0.02–0.09","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"0.02 - 0.09 NTU"}]}]}],"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":2.5,"low":1.7,"high":2.5,"kind":"range","display":"1.7–2.5","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"Maximum Running Annual Average: 1.7 ppm (range: 0.1 – 2.5 ppm)"},"federalStandard":{"type":"MRDLG","value":4,"units":null,"enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":2.5,"low":1.7,"high":2.5,"kind":"range","display":"1.7–2.5","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"Maximum Running Annual Average: 1.7 ppm (range: 0.1 – 2.5 ppm)"}]},{"analyteId":"chlorite","name":"Chlorite","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":"14998-27-7","whatItIs":null,"whyItMatters":null,"measured":{"value":0.02,"low":0.02,"high":0.02,"kind":"range","display":"0.02–0.02","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"0.02 - 0.08 ppm (average 0.02 ppm)"},"federalStandard":{"type":"MCLG","value":0.8,"units":null,"enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.02,"low":0.02,"high":0.02,"kind":"range","display":"0.02–0.02","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"0.02 - 0.08 ppm (average 0.02 ppm)"}]},{"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":33,"low":null,"high":null,"kind":"point","display":"33","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"Maximum LRAA: 33 ppb2 Individual site range: 16 to 40 ppb"},"federalStandard":{"type":"MCL","value":60,"units":null,"enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":33,"low":null,"high":null,"kind":"point","display":"33","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"Maximum LRAA: 33 ppb2 Individual site range: 16 to 40 ppb"}]},{"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":45,"low":null,"high":null,"kind":"point","display":"45","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"Maximum LRAA: 45 ppb2 Individual site range: 16 to 65 ppb"},"federalStandard":{"type":"MCL","value":80,"units":null,"enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":45,"low":null,"high":null,"kind":"point","display":"45","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"Maximum LRAA: 45 ppb2 Individual site range: 16 to 65 ppb"}]},{"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":18,"low":null,"high":null,"kind":"point","display":"18","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"18 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"18 ppm"}]},{"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":0.58,"low":0.41,"high":0.58,"kind":"range","display":"0.41–0.58","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"0.41 - 0.66 ppm (average 0.58 ppm)"},"federalStandard":{"type":"MCLG","value":4,"units":null,"enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.58,"low":0.41,"high":0.58,"kind":"range","display":"0.41–0.58","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"0.41 - 0.66 ppm (average 0.58 ppm)"}]},{"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":0.42,"low":null,"high":null,"kind":"point","display":"0.42","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"0.42 ppm"},"federalStandard":{"type":"MCLG","value":10,"units":null,"enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.42,"low":null,"high":null,"kind":"point","display":"0.42","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"0.42 ppm"}]},{"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":14,"low":null,"high":null,"kind":"point","display":"14","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"14 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":14,"low":null,"high":null,"kind":"point","display":"14","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"14 ppm"}]},{"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":31,"low":null,"high":null,"kind":"point","display":"31","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"31 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":31,"low":null,"high":null,"kind":"point","display":"31","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"31 ppb"}]},{"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":25,"low":null,"high":null,"kind":"point","display":"25","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"25 ppb"},"federalStandard":{"type":"MCL","value":2000,"units":null,"enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":25,"low":null,"high":null,"kind":"point","display":"25","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"25 ppb"}]},{"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":24,"low":null,"high":null,"kind":"point","display":"24","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"24 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":24,"low":null,"high":null,"kind":"point","display":"24","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"24 ppm"}]},{"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":0.251,"low":0.158,"high":0.251,"kind":"range","display":"0.158–0.251","units":null,"statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"0.158 ppm (0.0024 - 0.251 ppm)"},"federalStandard":{"type":"MCLG","value":1.3,"units":null,"enforceable":false},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.251,"low":0.158,"high":0.251,"kind":"range","display":"0.158–0.251","units":null,"statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"0.158 ppm (0.0024 - 0.251 ppm)"}]},{"analyteId":"iron","name":"Iron","family":"metal","familyLabel":"Metals","casrn":"7439-89-6","whatItIs":"A naturally occurring metal common in groundwater.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; causes rusty color, staining, and metallic taste.","measured":{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"5 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":5,"low":null,"high":null,"kind":"point","display":"5","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"5 ppb"}]},{"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":2.3,"low":1,"high":2.3,"kind":"range","display":"1–2.3","units":null,"statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"1.0 ppb (0.5 - 2.3 ppb)"},"federalStandard":{"type":"MCLG","value":0,"units":null,"enforceable":false},"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.3,"low":1,"high":2.3,"kind":"range","display":"1–2.3","units":null,"statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"1.0 ppb (0.5 - 2.3 ppb)"}]},{"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":11,"low":null,"high":null,"kind":"point","display":"11","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"11 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":11,"low":null,"high":null,"kind":"point","display":"11","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"11 ppm"}]},{"analyteId":"zinc","name":"Zinc","family":"metal","familyLabel":"Metals","casrn":"7440-66-6","whatItIs":"A naturally occurring metal that can also enter water from corroding pipes.","whyItMatters":"Regulated only as a secondary (cosmetic) standard; high levels cause a metallic taste.","measured":{"value":87,"low":null,"high":null,"kind":"point","display":"87","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"87 ppb"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":87,"low":null,"high":null,"kind":"point","display":"87","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"87 ppb"}]},{"analyteId":"pfbs","name":"Perfluorobutanesulfonic acid","family":"pfas","familyLabel":"PFAS (\"forever chemicals\")","casrn":"375-73-5","whatItIs":"Perfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'","whyItMatters":"Has no standalone limit but is part of the EPA PFAS Hazard Index that limits PFAS in combination.","measured":{"value":0.0037,"low":null,"high":null,"kind":"point","display":"0.0037","units":null,"statisticType":"reported_level","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"0.0037 ppb"},"federalStandard":{"type":"AL","value":2,"units":null,"enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.0037,"low":null,"high":null,"kind":"point","display":"0.0037","units":null,"statisticType":"reported_level","samplingContext":"system","rawVerbatim":"0.0037 ppb"}]},{"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":74,"low":null,"high":null,"kind":"point","display":"74","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"74 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":74,"low":null,"high":null,"kind":"point","display":"74","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"74 ppm"}]},{"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":91,"low":null,"high":null,"kind":"point","display":"91","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"91 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":91,"low":null,"high":null,"kind":"point","display":"91","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"91 ppm"}]},{"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":7.3,"low":null,"high":null,"kind":"point","display":"7.3","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"7.3 Standard Units"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.3,"low":null,"high":null,"kind":"point","display":"7.3","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"7.3 Standard Units"}]},{"analyteId":"specific_conductance","name":"Specific Conductance","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of how well water conducts electricity, which tracks dissolved mineral content.","whyItMatters":"Not federally regulated for health; used as a proxy for total dissolved solids.","measured":{"value":218,"low":null,"high":null,"kind":"point","display":"218","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"218 µmhos/cm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":218,"low":null,"high":null,"kind":"point","display":"218","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"218 µmhos/cm"}]},{"analyteId":"toc","name":"TOC","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"Total organic carbon — a measure of organic material dissolved in the water.","whyItMatters":"Not harmful itself, but it is the raw material that forms disinfection byproducts; removal is a treatment requirement.","measured":{"value":2.4,"low":1.9,"high":2.4,"kind":"range","display":"1.9–2.4","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"1.9 - 3.2 ppm (average 2.4 ppm)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.5,"low":1.2,"high":1.5,"kind":"range","display":"1.2–1.5","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"1.2 - 2.0 ppm (average 1.5 ppm)"},{"value":2.4,"low":1.9,"high":2.4,"kind":"range","display":"1.9–2.4","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"1.9 - 3.2 ppm (average 2.4 ppm)"}]},{"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":150,"low":null,"high":null,"kind":"point","display":"150","units":null,"statisticType":"average","samplingContext":"system","censored":false,"detectionLimit":null,"rawVerbatim":"150 ppm"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":150,"low":null,"high":null,"kind":"point","display":"150","units":null,"statisticType":"average","samplingContext":"system","rawVerbatim":"150 ppm"}]},{"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":0.09,"low":0.02,"high":0.09,"kind":"range","display":"0.02–0.09","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","censored":false,"detectionLimit":null,"rawVerbatim":"0.02 - 0.09 NTU"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":0.09,"low":0.02,"high":0.09,"kind":"range","display":"0.02–0.09","units":null,"statisticType":"range","samplingContext":"plant:or Level Detected","rawVerbatim":"0.02 - 0.09 NTU"}]}]}}