{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-26T11:20:10.141Z"},"system":{"slug":"ca_sdwis_edt__CA4110008__2026","name":"California Water Service - San Mateo","state":"CA","year":2026,"url":"https://www.thewatermap.com/water/ca/california-water-service-san-mateo/2026","apiUrl":"https://www.thewatermap.com/api/water/ca/california-water-service-san-mateo/2026","markdownUrl":"https://www.thewatermap.com/water/ca/california-water-service-san-mateo/2026/llms.txt","coordinates":{"latitude":37.496904,"longitude":-122.3330573},"contaminantsMeasured":12,"contaminantsWithFederalLimit":2,"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":"disinfection_byproduct","familyLabel":"Disinfection byproducts","contaminants":[{"analyteId":"bromodichloromethane","name":"Bromodichloromethane","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Counted within regulated total trihalomethanes; long-term exposure is associated with cancer and reproductive effects.","measured":{"value":7.128571428571428,"low":null,"high":null,"kind":"point","display":"7.128571428571428","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.128571428571428,"low":null,"high":null,"kind":"point","display":"7.128571428571428","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},{"value":8,"low":null,"high":null,"kind":"point","display":"8","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 8.0 UG/L on 2026-02-03 (7/7 samples detected)"}]},{"analyteId":"bromoform","name":"Bromoform","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Counted within regulated total trihalomethanes; long-term exposure is associated with liver and kidney effects.","measured":{"value":1.0371428571428571,"low":null,"high":null,"kind":"point","display":"1.0371428571428571","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 1.7 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":1.0371428571428571,"low":null,"high":null,"kind":"point","display":"1.0371428571428571","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"chloroform","name":"Chloroform","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane formed when chlorine reacts with organic matter in water.","whyItMatters":"A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.","measured":{"value":19.142857142857142,"low":null,"high":null,"kind":"point","display":"19.142857142857142","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":25,"low":null,"high":null,"kind":"point","display":"25","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 25.0 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":19.142857142857142,"low":null,"high":null,"kind":"point","display":"19.142857142857142","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"dibromochloromethane","name":"Dibromochloromethane","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.","measured":{"value":3.5285714285714285,"low":null,"high":null,"kind":"point","display":"3.5285714285714285","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.8,"low":null,"high":null,"kind":"point","display":"4.8","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 4.8 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":3.5285714285714285,"low":null,"high":null,"kind":"point","display":"3.5285714285714285","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"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":22.125,"low":null,"high":null,"kind":"point","display":"22.125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":{"type":"mcl","value":60,"units":"UG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":29,"low":null,"high":null,"kind":"point","display":"29","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 29.0 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":22.125,"low":null,"high":null,"kind":"point","display":"22.125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]},{"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":30.857142857142858,"low":null,"high":null,"kind":"point","display":"30.857142857142858","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":{"type":"mcl","value":80,"units":"UG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":30.857142857142858,"low":null,"high":null,"kind":"point","display":"30.857142857142858","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},{"value":35,"low":null,"high":null,"kind":"point","display":"35","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 35.0 UG/L on 2026-02-03 (7/7 samples detected)"}]}]},{"family":"other","familyLabel":"Other","contaminants":[{"analyteId":"dbaa","name":"Dbaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.2125,"low":null,"high":null,"kind":"point","display":"1.2125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 2 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.2125,"low":null,"high":null,"kind":"point","display":"1.2125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 2 non-detects)"},{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 1.9 UG/L on 2026-02-03 (6/8 samples detected)"}]},{"analyteId":"dcaa","name":"Dcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":13.9125,"low":null,"high":null,"kind":"point","display":"13.9125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 18.0 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":13.9125,"low":null,"high":null,"kind":"point","display":"13.9125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"mbaa","name":"Mbaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","censored":true,"detectionLimit":1,"rawVerbatim":"all 8 samples below DL (1.0 UG/L)"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"all 8 samples below DL (1.0 UG/L)"}]},{"analyteId":"mcaa","name":"Mcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.55,"low":null,"high":null,"kind":"point","display":"1.55","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 4 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 2.2 UG/L on 2026-02-04 (4/8 samples detected)"},{"value":1.55,"low":null,"high":null,"kind":"point","display":"1.55","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 4 non-detects)"}]},{"analyteId":"tcaa","name":"Tcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":6.225,"low":null,"high":null,"kind":"point","display":"6.225","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9.3,"low":null,"high":null,"kind":"point","display":"9.3","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 9.3 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":6.225,"low":null,"high":null,"kind":"point","display":"6.225","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]}]},{"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":8.666666666666666,"low":null,"high":null,"kind":"point","display":"8.666666666666666","units":"PH","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 3 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.7,"low":null,"high":null,"kind":"point","display":"8.7","units":"PH","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 8.7 PH on 2026-02-04 (3/3 samples detected)"},{"value":8.666666666666666,"low":null,"high":null,"kind":"point","display":"8.666666666666666","units":"PH","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 3 samples (DL/2 substitution for 0 non-detects)"}]}]}],"contaminants":[{"analyteId":"bromodichloromethane","name":"Bromodichloromethane","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Counted within regulated total trihalomethanes; long-term exposure is associated with cancer and reproductive effects.","measured":{"value":7.128571428571428,"low":null,"high":null,"kind":"point","display":"7.128571428571428","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":7.128571428571428,"low":null,"high":null,"kind":"point","display":"7.128571428571428","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},{"value":8,"low":null,"high":null,"kind":"point","display":"8","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 8.0 UG/L on 2026-02-03 (7/7 samples detected)"}]},{"analyteId":"bromoform","name":"Bromoform","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Counted within regulated total trihalomethanes; long-term exposure is associated with liver and kidney effects.","measured":{"value":1.0371428571428571,"low":null,"high":null,"kind":"point","display":"1.0371428571428571","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.7,"low":null,"high":null,"kind":"point","display":"1.7","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 1.7 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":1.0371428571428571,"low":null,"high":null,"kind":"point","display":"1.0371428571428571","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"chloroform","name":"Chloroform","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane formed when chlorine reacts with organic matter in water.","whyItMatters":"A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.","measured":{"value":19.142857142857142,"low":null,"high":null,"kind":"point","display":"19.142857142857142","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":25,"low":null,"high":null,"kind":"point","display":"25","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 25.0 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":19.142857142857142,"low":null,"high":null,"kind":"point","display":"19.142857142857142","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"dibromochloromethane","name":"Dibromochloromethane","family":"disinfection_byproduct","familyLabel":"Disinfection byproducts","casrn":null,"whatItIs":"A trihalomethane disinfection byproduct.","whyItMatters":"Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.","measured":{"value":3.5285714285714285,"low":null,"high":null,"kind":"point","display":"3.5285714285714285","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.8,"low":null,"high":null,"kind":"point","display":"4.8","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 4.8 UG/L on 2026-02-03 (7/7 samples detected)"},{"value":3.5285714285714285,"low":null,"high":null,"kind":"point","display":"3.5285714285714285","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"}]},{"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":22.125,"low":null,"high":null,"kind":"point","display":"22.125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":{"type":"mcl","value":60,"units":"UG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":29,"low":null,"high":null,"kind":"point","display":"29","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 29.0 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":22.125,"low":null,"high":null,"kind":"point","display":"22.125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]},{"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":30.857142857142858,"low":null,"high":null,"kind":"point","display":"30.857142857142858","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":{"type":"mcl","value":80,"units":"UG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":30.857142857142858,"low":null,"high":null,"kind":"point","display":"30.857142857142858","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 7 samples (DL/2 substitution for 0 non-detects)"},{"value":35,"low":null,"high":null,"kind":"point","display":"35","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 35.0 UG/L on 2026-02-03 (7/7 samples detected)"}]},{"analyteId":"dbaa","name":"Dbaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.2125,"low":null,"high":null,"kind":"point","display":"1.2125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 2 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.2125,"low":null,"high":null,"kind":"point","display":"1.2125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 2 non-detects)"},{"value":1.9,"low":null,"high":null,"kind":"point","display":"1.9","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 1.9 UG/L on 2026-02-03 (6/8 samples detected)"}]},{"analyteId":"dcaa","name":"Dcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":13.9125,"low":null,"high":null,"kind":"point","display":"13.9125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 18.0 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":13.9125,"low":null,"high":null,"kind":"point","display":"13.9125","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"mbaa","name":"Mbaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","censored":true,"detectionLimit":1,"rawVerbatim":"all 8 samples below DL (1.0 UG/L)"},"federalStandard":null,"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"all 8 samples below DL (1.0 UG/L)"}]},{"analyteId":"mcaa","name":"Mcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":1.55,"low":null,"high":null,"kind":"point","display":"1.55","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 4 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":2.2,"low":null,"high":null,"kind":"point","display":"2.2","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 2.2 UG/L on 2026-02-04 (4/8 samples detected)"},{"value":1.55,"low":null,"high":null,"kind":"point","display":"1.55","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 4 non-detects)"}]},{"analyteId":"tcaa","name":"Tcaa","family":"other","familyLabel":"Other","casrn":null,"whatItIs":null,"whyItMatters":null,"measured":{"value":6.225,"low":null,"high":null,"kind":"point","display":"6.225","units":"UG/L","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":9.3,"low":null,"high":null,"kind":"point","display":"9.3","units":"UG/L","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 9.3 UG/L on 2026-02-03 (8/8 samples detected)"},{"value":6.225,"low":null,"high":null,"kind":"point","display":"6.225","units":"UG/L","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 8 samples (DL/2 substitution for 0 non-detects)"}]},{"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":8.666666666666666,"low":null,"high":null,"kind":"point","display":"8.666666666666666","units":"PH","statisticType":"avg","samplingContext":"distribution","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 3 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":8.7,"low":null,"high":null,"kind":"point","display":"8.7","units":"PH","statisticType":"max_single","samplingContext":"distribution","rawVerbatim":"max detection 8.7 PH on 2026-02-04 (3/3 samples detected)"},{"value":8.666666666666666,"low":null,"high":null,"kind":"point","display":"8.666666666666666","units":"PH","statisticType":"avg","samplingContext":"distribution","rawVerbatim":"avg over 3 samples (DL/2 substitution for 0 non-detects)"}]}]}}