{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-05-27T15:44:01.656Z"},"system":{"slug":"ca_sdwis_edt__CA5410016__2024","name":"Cws - Visalia","state":"CA","year":2024,"url":"https://www.thewatermap.com/water/ca/cws-visalia/2024","apiUrl":"https://www.thewatermap.com/api/water/ca/cws-visalia/2024","markdownUrl":"https://www.thewatermap.com/water/ca/cws-visalia/2024/llms.txt","coordinates":{"latitude":36.3302284,"longitude":-119.292058},"contaminantsMeasured":120,"contaminantsWithFederalLimit":69,"contaminantsAtOrAboveLimit":3,"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 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limit"},"breakdowns":[],"measurements":[{"value":26,"low":null,"high":null,"kind":"point","display":"26","units":"MG/L","statisticType":"max_single","samplingContext":"source","rawVerbatim":"max detection 26.0 MG/L on 2024-04-08 (70/70 samples detected)"},{"value":7.972857142857143,"low":null,"high":null,"kind":"point","display":"7.972857142857143","units":"MG/L","statisticType":"avg","samplingContext":"source","rawVerbatim":"avg over 70 samples (DL/2 substitution for 0 non-detects)"},{"value":18,"low":null,"high":null,"kind":"point","display":"18","units":"MG/L","statisticType":"max_single","samplingContext":"entry_point","rawVerbatim":"max detection 18.0 MG/L on 2024-05-06 (12/12 samples detected)"},{"value":15.5,"low":null,"high":null,"kind":"point","display":"15.5","units":"MG/L","statisticType":"avg","samplingContext":"entry_point","rawVerbatim":"avg over 12 samples (DL/2 substitution for 0 non-detects)"}]},{"analyteId":"cyanide","name":"Cyanide","family":"inorganic","familyLabel":"Inorganic chemicals","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":"source","censored":true,"detectionLimit":5,"rawVerbatim":"all 29 samples below DL (5.0 UG/L)"},"federalStandard":{"type":"mcl","value":150,"units":"UG/L","enforceable":true},"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":"source","rawVerbatim":"all 29 samples below DL (5.0 UG/L)"}]},{"analyteId":"fluoride","name":"Fluoride","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":null,"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":0.06785714285714287,"low":null,"high":null,"kind":"point","display":"0.06785714285714287","units":"MG/L","statisticType":"avg","samplingContext":"entry_point","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 14 samples (DL/2 substitution for 9 non-detects)"},"federalStandard":{"type":"mcl","value":2,"units":"MG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":0.06785714285714287,"low":null,"high":null,"kind":"point","display":"0.06785714285714287","units":"MG/L","statisticType":"avg","samplingContext":"entry_point","rawVerbatim":"avg over 14 samples (DL/2 substitution for 9 non-detects)"},{"value":0.14,"low":null,"high":null,"kind":"point","display":"0.14","units":"MG/L","statisticType":"max_single","samplingContext":"source","rawVerbatim":"max detection 0.14 MG/L on 2024-02-21 (19/78 samples detected)"},{"value":0.0626923076923077,"low":null,"high":null,"kind":"point","display":"0.0626923076923077","units":"MG/L","statisticType":"avg","samplingContext":"source","rawVerbatim":"avg over 78 samples (DL/2 substitution for 59 non-detects)"},{"value":0.1,"low":null,"high":null,"kind":"point","display":"0.1","units":"MG/L","statisticType":"max_single","samplingContext":"entry_point","rawVerbatim":"max detection 0.1 MG/L on 2024-09-17 (5/14 samples detected)"}]},{"analyteId":"nitrate","name":"Nitrate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":null,"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":4.309090909090909,"low":null,"high":null,"kind":"point","display":"4.309090909090909","units":"MG/L","statisticType":"avg","samplingContext":"entry_point","censored":false,"detectionLimit":null,"rawVerbatim":"avg over 22 samples (DL/2 substitution for 0 non-detects)"},"federalStandard":{"type":"mcl","value":10,"units":"MG/L","enforceable":true},"status":{"key":"under","label":"Within the limit"},"breakdowns":[],"measurements":[{"value":4.309090909090909,"low":null,"high":null,"kind":"point","display":"4.309090909090909","units":"MG/L","statisticType":"avg","samplingContext":"entry_point","rawVerbatim":"avg over 22 samples (DL/2 substitution for 0 non-detects)"},{"value":6.4,"low":null,"high":null,"kind":"point","display":"6.4","units":"MG/L","statisticType":"max_single","samplingContext":"source","rawVerbatim":"max detection 6.4 MG/L on 2024-10-09 (118/118 samples 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below DL (0.4 MG/L)"},"federalStandard":{"type":"mcl","value":1,"units":"MG/L","enforceable":true},"status":{"key":"none","label":"None detected"},"breakdowns":[],"measurements":[{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"MG/L","statisticType":"max_single","samplingContext":"entry_point","rawVerbatim":"all 13 samples below DL (0.4 MG/L)"},{"value":null,"low":null,"high":null,"kind":"non_detect","display":"Not detected","units":"MG/L","statisticType":"max_single","samplingContext":"source","rawVerbatim":"all 76 samples below DL (0.05 MG/L)"}]},{"analyteId":"sulfate","name":"Sulfate","family":"inorganic","familyLabel":"Inorganic chemicals","casrn":null,"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 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