{"schemaVersion":2,"id":"us-MA4292000","communeId":"MA4292000","name":"Swansea Water District","slug":"swansea-water-district-ma4292000","country":"us","region":"Massachusetts","supplier":"SWANSEA WATER DISTRICT","networks":[{"code":"00004/17822","name":"Entry Point from Maker Treatment (Maker Wells 4 & 5)"},{"code":"00007/2202","name":"Entry Point from Borge Treatment (Borge Wells 7 & 11)"},{"code":"00008/2204","name":"Entry Point from Hornbine Treatment (Hornbine Well 8)"},{"code":"00035/EP001","name":"Entry Point from Desalination Facility (Desalination Facility)"}],"latestSampleDate":"2024-08-05T00:00:00Z","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: no PFAS treatment (NMT). 4 entry points sampled, 14 sampling events between 2023-01-11 and 2024-08-05. The page's PFAS values come from the newest sample at Entry Point from Maker Treatment (Maker Wells 4 & 5) (00004/17822), 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":0.0077,"valueText":"0.0077","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2024-08-05T00:00:00Z","sampleId":"810-114491-1"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"MA4292000","name":"Entry Point from Maker Treatment (Maker Wells 4 & 5)","network":"00004/17822"},"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"},{"name":"PFNA","valueText":"<0.004","unit":"µg/L"},{"name":"HFPO-DA","valueText":"<0.005","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":"over"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"810-114489-1","date":"2024-08-05","commune":"MA4292000","communeName":"SWANSEA WATER DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00007/2202"],"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":"997800cb1eeb2e21e8f35d312686a6f21c1e20da5cb7aa61aacba29c8de13085"},{"id":"810-114491-1","date":"2024-08-05","commune":"MA4292000","communeName":"SWANSEA WATER 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