{"schemaVersion":2,"id":"us-MA4040000","communeId":"MA4040000","name":"Braintree Water and Sewer Dept.","slug":"braintree-water-and-sewer-dept-ma4040000","country":"us","region":"Massachusetts","supplier":"BRAINTREE WATER AND SEWER DEPT.","networks":[{"code":"10182/10182","name":"Finished Water (Great Pond Treatment Plant)"}],"latestSampleDate":"2024-03-19T00:00:00Z","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: granular activated carbon (GAC). 1 entry point sampled, 5 sampling events between 2023-03-27 and 2024-03-19. The page's PFAS values come from the newest sample at Finished Water (Great Pond Treatment Plant) (10182/10182). 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":0.0127,"valueText":"0.0127","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2024-03-19T00:00:00Z","sampleId":"Q2413466001"},"pfas4DetectedCount":2,"lowerBound":true,"sampledAt":{"commune":"MA4040000","name":"Finished Water (Great Pond Treatment Plant)","network":"10182/10182"},"qualifiers":[{"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":"PFMBA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMPA","valueText":"<0.004","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":"Q2413466001","date":"2024-03-19","commune":"MA4040000","communeName":"BRAINTREE WATER AND SEWER DEPT.","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10182/10182"],"sum20":null,"pfas4":{"value":0.0127,"valueText":"0.0127","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":"d281d050ae839380557828d023b2c36e637e8b41afe4eebf2425063cd0d3e894"},{"id":"Q2341334001","date":"2023-09-26","commune":"MA4040000","communeName":"BRAINTREE WATER AND SEWER DEPT.","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10182/10182"],"sum20":null,"pfas4":{"value":0.0138,"valueText":"0.0138","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":"223ac4549b124583861d1e7689fb5713d3f072e17cdd950148525c4d81cb0472"},{"id":"Q2324399001","date":"2023-06-26","commune":"MA4040000","communeName":"BRAINTREE WATER AND SEWER DEPT.","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10182/10182"],"sum20":null,"pfas4":{"value":0.0123,"valueText":"0.0123","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":"f85f30570026449ee59aba3995ea6f5700d282775fad4387970374acecbb2fdc"},{"id":"Q2311375001","date":"2023-03-27","commune":"MA4040000","communeName":"BRAINTREE WATER AND SEWER DEPT.","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["10182/10182"],"sum20":null,"pfas4":{"value":0.0106,"valueText":"0.0106","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":"09ad72443dffc60e3c0062640fd63a442a61b4b4cea178b53705001b2ae6b0cd"}],"revision":"6ffb0f708d444f2138730c4b03dfffe5212edfbd0695a76d7dafbca948632d8b","us":{"pwsid":"MA4040000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["SW"],"counties":["Norfolk"],"zips":["02184"],"entryPoints":1,"samples":5,"detectedCompounds":["PFOA","PFOS","PFBS","PFHxA","PFPeA"],"treatment":["GAC"],"potentialSources":"DK","pfoaMax":0.0053,"pfosMax":0.0085,"hazardIndex":null,"centroidSource":"sab"}}