{"schemaVersion":2,"id":"us-MA4088000","communeId":"MA4088000","name":"Easton Water Div","slug":"easton-water-div-ma4088000","country":"us","region":"Massachusetts","supplier":"EASTON WATER DIV","networks":[{"code":"00019/18552","name":"Entry Point to Dist. System (Well #6 (Wheaton Farm Wellfield))"},{"code":"90002/90002","name":"Entry Point to Dist. System (Well #1)"},{"code":"90003/90003","name":"Entry Point to Dist. System (Wells #2 & #4)"},{"code":"90004/90004","name":"Entry Point to Dist. System (Wells #3 & #5 & #7)"}],"latestSampleDate":"2024-08-06T00:00:00Z","conformity":{"conclusion":null,"bacteriological":"unknown","chemical":"unknown"},"source":{"name":"U.S. Environmental Protection Agency, Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) occurrence data, final dataset (August 2026)","url":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","license":"Public domain (U.S. federal government work, 17 U.S.C. § 105)","kind":"open_data_file","verified":true,"retrievedAt":"2026-09-19T19:22:35.464Z","note":"UCMR 5 results do not indicate compliance or noncompliance with the PFAS drinking water standards. Samples are taken at the entry point to the distribution system, not at the tap; the system may have changed sources or installed treatment since. Treatment reported to EPA for PFAS: ion exchange (IEX), no PFAS treatment (NMT). 4 entry points sampled, 8 sampling events between 2023-01-18 and 2024-08-06. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Well #1) (90002/90002), the entry point with the highest PFOA + PFOS + PFNA + PFHxS sum; the other entry points' maxima are listed as separate rows. Non-detects are shown as \"<\" followed by EPA's minimum reporting level (3 to 20 ng/L); PFAS-4 sums quantified compounds only, so it is a lower bound when a compound was not detected. Registry (name, population, counties, ZIPs) from EPA SDWIS/ECHO; service-area centroid from EPA ORD."},"pfas":{"status":"measured","sum20":null,"pfas4":{"value":null,"valueText":"<0.015","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"ok","sampleDate":"2024-08-06T00:00:00Z","sampleId":"810-114674-1","nonDetect":true,"upperBound":0.015},"pfas4DetectedCount":0,"lowerBound":true,"sampledAt":{"commune":"MA4088000","name":"Entry Point to Dist. System (Well #1)","network":"90002/90002"},"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"},{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"},{"name":"HFPO-DA","valueText":"<0.005","unit":"µg/L"},{"name":"PFBS","valueText":"<0.003","unit":"µg/L"},{"name":"11Cl-PF3OUdS","valueText":"<0.005","unit":"µg/L"},{"name":"4:2 FTS","valueText":"<0.003","unit":"µg/L"},{"name":"6:2 FTS","valueText":"<0.005","unit":"µg/L"},{"name":"8:2 FTS","valueText":"<0.005","unit":"µg/L"},{"name":"9Cl-PF3ONS","valueText":"<0.002","unit":"µg/L"},{"name":"ADONA","valueText":"<0.003","unit":"µg/L"},{"name":"NFDHA","valueText":"<0.02","unit":"µg/L"},{"name":"PFBA","valueText":"<0.005","unit":"µg/L"},{"name":"PFDA","valueText":"<0.003","unit":"µg/L"},{"name":"PFDoA","valueText":"<0.003","unit":"µg/L"},{"name":"PFEESA","valueText":"<0.003","unit":"µg/L"},{"name":"PFHpA","valueText":"<0.003","unit":"µg/L"},{"name":"PFHpS","valueText":"<0.003","unit":"µg/L"},{"name":"PFHxA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMBA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMPA","valueText":"<0.004","unit":"µg/L"},{"name":"PFPeA","valueText":"<0.003","unit":"µg/L"},{"name":"PFPeS","valueText":"<0.004","unit":"µg/L"},{"name":"PFUnA","valueText":"<0.002","unit":"µg/L"}],"comparison":{"proposed":{"value":0.0005,"period":"annual_mean","official":false,"state":"inconclusive"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"810-114674-1","date":"2024-08-06","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90002/90002"],"sum20":null,"pfas4":{"value":null,"valueText":"<0.015","unit":"µg/L","nonDetect":true,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"},{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"3fb31bc7d3f356570834b28c15cfdfb9d2cc8d08cc8e8604f3353d9ca11ef802"},{"id":"810-69278-1","date":"2023-07-12","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00019/18552"],"sum20":null,"pfas4":{"value":null,"valueText":"<0.015","unit":"µg/L","nonDetect":true,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"},{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"58c58beac8eb96795a71d0feb113b29b4da9c3e15c5097aa10cf924b9e7b4889"},{"id":"810-69485-1","date":"2023-07-12","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90003/90003"],"sum20":null,"pfas4":{"value":0.0199,"valueText":"0.0199","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"d8106b462104a3fc414fe98d736ac8e7ca6d0bf4c0759392f4ccd69b587bdfce"},{"id":"810-69492-1","date":"2023-07-12","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90002/90002"],"sum20":null,"pfas4":{"value":0.0319,"valueText":"0.0319","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"889fcfa862a4aa0528e1c9d30064909f3708c79b071db378e5f4f20fd4d62379"},{"id":"810-50714-1","date":"2023-01-18","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00019/18552"],"sum20":null,"pfas4":{"value":null,"valueText":"<0.015","unit":"µg/L","nonDetect":true,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"},{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"7b950f3992cfe4d038259391e88ae224bbb4a63da69608aad4b9a87ca5d5ae29"},{"id":"810-50718-1","date":"2023-01-18","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90004/90004"],"sum20":null,"pfas4":{"value":0.0088,"valueText":"0.0088","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"7da0ec7ea8b7930af9b6749ec518907056d0856f8eea40efafc50ecbba30655d"},{"id":"810-50731-1","date":"2023-01-18","commune":"MA4088000","communeName":"EASTON WATER DIV","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90003/90003"],"sum20":null,"pfas4":{"value":0.0061,"valueText":"0.0061","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFHxS","valueText":"<0.003","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"ae39dcf96e0f8a83a1135cf58cde8ba9b698c59abaad899006371ffda737b713"}],"revision":"e1e4953fe10b4d3bccb2cd9b8798bb2f69613fb755efb8c76ab3ebb4886d4522","us":{"pwsid":"MA4088000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["GW"],"counties":["Bristol"],"zips":["02334","02356","02375"],"entryPoints":4,"samples":8,"detectedCompounds":["PFOA","PFOS","PFHxS","PFBS","PFHxA","PFPeA"],"treatment":["IEX","NMT"],"potentialSources":"Yes","pfoaMax":0.0099,"pfosMax":0.0163,"hazardIndex":null,"centroidSource":"sab"}}