{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-07-26T06:23:59.893Z"},"system":{"slug":"epa_sdwis_lcr__CA0910013__2022","name":"Georgetown Divide Pud","state":"CA","year":2022,"url":"https://www.thewatermap.com/water/ca/georgetown-divide-pud/2022","apiUrl":"https://www.thewatermap.com/api/water/ca/georgetown-divide-pud/2022","markdownUrl":"https://www.thewatermap.com/water/ca/georgetown-divide-pud/2022/llms.txt","coordinates":{"latitude":38.9185,"longitude":-120.7599},"contaminantsMeasured":7,"contaminantsWithFederalLimit":4,"contaminantsAtOrAboveLimit":0,"contaminantsApproachingLimit":1,"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":1.07,"low":null,"high":null,"kind":"point","display":"1.07","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"1.07 average 0.59 to 1.02"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.07,"low":null,"high":null,"kind":"point","display":"1.07","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"1.07 average 0.59 to 1.02"},{"value":0.83,"low":null,"high":null,"kind":"point","display":"0.83","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0.83 average 0.68 to 1.28"}]}]},{"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":51.6,"low":10.5,"high":51.6,"kind":"range","display":"10.5–51.6","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","censored":false,"detectionLimit":null,"rawVerbatim":"26.8 LRAA 10.5 – 51.6"},"federalStandard":null,"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":51.6,"low":10.5,"high":51.6,"kind":"range","display":"10.5–51.6","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"26.8 LRAA 10.5 – 51.6"},{"value":10.5,"low":null,"high":null,"kind":"point","display":"10.5","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"10.5 LRAA 4.9 to 20.80"}]},{"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":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","censored":false,"detectionLimit":null,"rawVerbatim":"29 LRAA 20.0 to 53.0"},"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":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"29 LRAA 20.0 to 53.0"},{"value":20.95,"low":null,"high":null,"kind":"point","display":"20.95","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"20.95 LRAA 7.9 to 29.0"}]}]},{"family":"metal","familyLabel":"Metals","contaminants":[{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":null,"whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2022)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2022)"}]}]},{"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":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","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":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Sweetwater","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":null,"statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","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":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0"}]}]},{"family":"physical_aggregate","familyLabel":"Physical & aggregate","contaminants":[{"analyteId":"turbidity","name":"Turbidity","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":null,"whatItIs":"A measure of cloudiness from suspended particles in the water.","whyItMatters":"High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.","measured":{"value":0.288,"low":null,"high":null,"kind":"point","display":"0.288","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0.288peak 0.089average"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.288,"low":null,"high":null,"kind":"point","display":"0.288","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0.288peak 0.089average"},{"value":0.264,"low":null,"high":null,"kind":"point","display":"0.264","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0.264peak 0.047average"}]}]}],"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":1.07,"low":null,"high":null,"kind":"point","display":"1.07","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"1.07 average 0.59 to 1.02"},"federalStandard":{"type":"MCL","value":4,"units":"mg/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":1.07,"low":null,"high":null,"kind":"point","display":"1.07","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"1.07 average 0.59 to 1.02"},{"value":0.83,"low":null,"high":null,"kind":"point","display":"0.83","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0.83 average 0.68 to 1.28"}]},{"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":51.6,"low":10.5,"high":51.6,"kind":"range","display":"10.5–51.6","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","censored":false,"detectionLimit":null,"rawVerbatim":"26.8 LRAA 10.5 – 51.6"},"federalStandard":null,"status":{"key":"approaching","label":"Approaching the limit"},"breakdowns":[],"measurements":[{"value":51.6,"low":10.5,"high":51.6,"kind":"range","display":"10.5–51.6","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"26.8 LRAA 10.5 – 51.6"},{"value":10.5,"low":null,"high":null,"kind":"point","display":"10.5","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"10.5 LRAA 4.9 to 20.80"}]},{"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":29,"low":null,"high":null,"kind":"point","display":"29","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Sweetwater","censored":false,"detectionLimit":null,"rawVerbatim":"29 LRAA 20.0 to 53.0"},"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":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"29 LRAA 20.0 to 53.0"},{"value":20.95,"low":null,"high":null,"kind":"point","display":"20.95","units":"ug/L","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"20.95 LRAA 7.9 to 29.0"}]},{"analyteId":"lead","name":"Lead","family":"metal","familyLabel":"Metals","casrn":null,"whatItIs":"A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.","whyItMatters":"There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.","measured":{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","censored":false,"detectionLimit":null,"rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2022)"},"federalStandard":{"type":"AL","value":0.015,"units":"mg/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":0,"low":null,"high":null,"kind":"point","display":"0.0","units":"mg/L","statisticType":"p90","samplingContext":"at_the_tap","rawVerbatim":"lead 90th-percentile 0.0 mg/L (EPA SDWIS LCR, 1 round(s), 2022)"}]},{"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":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","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":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Sweetwater","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":null,"statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0"},"federalStandard":{"type":"PHG","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":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0"},{"value":0,"low":null,"high":null,"kind":"point","display":"0","units":null,"statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0"}]},{"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":0.288,"low":null,"high":null,"kind":"point","display":"0.288","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Walton Lake","censored":false,"detectionLimit":null,"rawVerbatim":"0.288peak 0.089average"},"federalStandard":null,"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.288,"low":null,"high":null,"kind":"point","display":"0.288","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Walton Lake","rawVerbatim":"0.288peak 0.089average"},{"value":0.264,"low":null,"high":null,"kind":"point","display":"0.264","units":"NTU","statisticType":"reported_level","samplingContext":"plant:Sweetwater","rawVerbatim":"0.264peak 0.047average"}]}]}}