{"dataset":{"name":"U.S. Drinking Water Quality — Contaminant Measurements","license":"https://creativecommons.org/licenses/by/4.0/","homepage":"https://www.thewatermap.com"},"meta":{"generatedAt":"2026-07-14T14:53:02.584Z"},"system":{"slug":"ca__placer-cwa-foothill__CA3110025","name":"Placer Cwa - Foothill — Auburn, Ca","state":"CA","year":2022,"url":"https://www.thewatermap.com/water/ca/placer-cwa-foothill-auburn-ca/2022","apiUrl":"https://www.thewatermap.com/api/water/ca/placer-cwa-foothill-auburn-ca/2022","markdownUrl":"https://www.thewatermap.com/water/ca/placer-cwa-foothill-auburn-ca/2022/llms.txt","coordinates":{"latitude":38.8945939,"longitude":-121.0739897},"contaminantsMeasured":16,"contaminantsWithFederalLimit":6,"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 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relevant to corrosion control and treatment.","measured":{"value":16.2,"low":15,"high":16.2,"kind":"range","display":"15–16.2","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","censored":false,"detectionLimit":null,"rawVerbatim":"15-16.2 15.6"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":4.18,"low":0,"high":4.18,"kind":"range","display":"0–4.18","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","rawVerbatim":"0-4.18 2.09"},{"value":16.2,"low":15,"high":16.2,"kind":"range","display":"15–16.2","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","rawVerbatim":"15-16.2 15.6"}]},{"analyteId":"bicarbonate","name":"Bicarbonate","family":"physical_aggregate","familyLabel":"Physical & aggregate","casrn":"71-52-3","whatItIs":null,"whyItMatters":null,"measured":{"value":16.2,"low":10.8,"high":16.2,"kind":"range","display":"10.8–16.2","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","censored":false,"detectionLimit":null,"rawVerbatim":"10.8-16.2 13.5"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":16.2,"low":10.8,"high":16.2,"kind":"range","display":"10.8–16.2","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","rawVerbatim":"10.8-16.2 13.5"}]},{"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":11.3,"low":10.7,"high":11.3,"kind":"range","display":"10.7–11.3","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","censored":false,"detectionLimit":null,"rawVerbatim":"10.7-11.3 11"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":11.3,"low":10.7,"high":11.3,"kind":"range","display":"10.7–11.3","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","rawVerbatim":"10.7-11.3 11"}]},{"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":1.8,"low":0,"high":1.8,"kind":"range","display":"0–1.8","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","censored":false,"detectionLimit":null,"rawVerbatim":"0-1.8 (1.3)"},"federalStandard":null,"status":{"key":"detected","label":"Detected — no federal limit"},"breakdowns":[],"measurements":[{"value":1.8,"low":0,"high":1.8,"kind":"range","display":"0–1.8","units":"mg/L","statisticType":"reported_level","samplingContext":"plant:Surface Water Range and Average or (HRAA)","rawVerbatim":"0-1.8 (1.3)"}]}]}}