{"schemaVersion":2,"id":"us-MA4016000","communeId":"MA4016000","name":"Attleboro Water Dept","slug":"attleboro-water-dept-ma4016000","country":"us","region":"Massachusetts","supplier":"ATTLEBORO WATER DEPT","networks":[{"code":"10356/23851","name":"Entry Point to Dist. System (Wading River)"},{"code":"90001/10350","name":"Entry Point to Dist. System (West Street WTP)"}],"latestSampleDate":"2026-01-12T00:00:00Z","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), other treatment (OTH). 2 entry points sampled, 10 sampling events between 2024-03-25 and 2026-01-12. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Wading River) (10356/23851), 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":"2026-01-12T00:00:00Z","sampleId":"810-177873-1","nonDetect":true,"upperBound":0.015},"pfas4DetectedCount":0,"lowerBound":true,"sampledAt":{"commune":"MA4016000","name":"Entry Point to Dist. System (Wading River)","network":"10356/23851"},"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":"NEtFOSAA","valueText":"<0.005","unit":"µg/L"},{"name":"NFDHA","valueText":"<0.02","unit":"µg/L"},{"name":"NMeFOSAA","valueText":"<0.006","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":"PFTA","valueText":"<0.008","unit":"µg/L"},{"name":"PFTrDA","valueText":"<0.007","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":"810-177873-1","date":"2026-01-12","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10356/23851"],"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":"ef73668d506b50f35fa79f3ad10324889c7dbbc0d00277fdcdc59f6b3a8b99e2"},{"id":"810-176765-1","date":"2025-12-29","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10356/23851"],"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":"468c1a59dce155b9d0bd4dc0cf7b7341ce8a7ed8386d4ac63f4d40860b73720b"},{"id":"810-150948-1","date":"2025-06-03","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10356/23851"],"sum20":null,"pfas4":{"value":0.0186,"valueText":"0.0186","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":"a4f8787241eb4d746929ab1e33930ace0b2f5a141e77d40b785710f285cab321"},{"id":"810-139967-1","date":"2025-03-03","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10356/23851"],"sum20":null,"pfas4":{"value":0.0119,"valueText":"0.0119","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":"94fa600694ac7d23bbb05aa82e35823cbd745b661a8cf0aa32ff7b4a720e893a"},{"id":"810-129972-1","date":"2024-12-01","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90001/10350"],"sum20":null,"pfas4":{"value":0.0033,"valueText":"0.0033","unit":"µg/L","nonDetect":false,"lowerBound":true,"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"}]},"revision":"dfe795c7a0dc00ca8d95f0adee0f1197799e0be8289a9820fd103e6dc3f8c6f6"},{"id":"810-119385-1","date":"2024-09-09","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90001/10350"],"sum20":null,"pfas4":{"value":0.0038,"valueText":"0.0038","unit":"µg/L","nonDetect":false,"lowerBound":true,"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"}]},"revision":"3651b303ff3596bd4eb65f0662ffc13b9081e5f03afb36bf81ce62a7181e3fae"},{"id":"810-111622-1","date":"2024-07-15","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90001/10350"],"sum20":null,"pfas4":{"value":0.0035,"valueText":"0.0035","unit":"µg/L","nonDetect":false,"lowerBound":true,"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"}]},"revision":"71e9bfabc8edf6c44ce5c2b85c008c489b432005fb079f222874458ccf3a0f2f"},{"id":"810-100832-1","date":"2024-04-15","commune":"MA4016000","communeName":"ATTLEBORO WATER DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["90001/10350"],"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":"d2fec9e648bf764fea6241d42bc591c85362a8fa2137c2348086c4319758941c"}],"revision":"b1b7a04f884ee941c116e28b91b469b1f479bfd9d0bc4360f9f2a583261c2e09","us":{"pwsid":"MA4016000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["SW"],"counties":["Bristol"],"zips":["02048","02703","02760"],"entryPoints":2,"samples":10,"detectedCompounds":["PFOA","PFOS","PFHxS","PFHxA","PFPeA"],"treatment":["NMT","OTH"],"potentialSources":"Yes","pfoaMax":0.0066,"pfosMax":0.012,"hazardIndex":null,"centroidSource":"sab"}}