{"schemaVersion":2,"id":"us-MA4020000","communeId":"MA4020000","name":"Barnstable Fire District","slug":"barnstable-fire-district-ma4020000","country":"us","region":"Massachusetts","supplier":"BARNSTABLE FIRE DISTRICT","networks":[{"code":"402000001G/10001","name":"GP WELL # 1 (GP WELL  1)"},{"code":"402000002G/10008","name":"WELL #2 AND WELL #5 (GP WELL # 2)"},{"code":"402000003G/10005","name":"WELL #3 & WELL #4 (GP WELL  3)"}],"latestSampleDate":"2023-10-17T00:00:00Z","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). 3 entry points sampled, 7 sampling events between 2023-02-07 and 2023-10-17. The page's PFAS values come from the newest sample at WELL #2 AND WELL #5 (GP WELL # 2) (402000002G/10008), 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":0.0049,"valueText":"0.0049","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2023-08-07T00:00:00Z","sampleId":"106671P"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"MA4020000","name":"WELL #2 AND WELL #5 (GP WELL # 2)","network":"402000002G/10008"},"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"},{"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":"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":"PFMBA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMPA","valueText":"<0.004","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":"over"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"106670P","date":"2023-08-07","commune":"MA4020000","communeName":"BARNSTABLE FIRE DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["402000001G/10001"],"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":"4b9dc07b67aaeafef5de3b5e5a4a1c9ff9e5308f4c6c519d5414b032d474f9b4"},{"id":"106671P","date":"2023-08-07","commune":"MA4020000","communeName":"BARNSTABLE FIRE DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["402000002G/10008"],"sum20":null,"pfas4":{"value":0.0049,"valueText":"0.0049","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":"16ef9556c007eff6c9da9216c377acda5067ee08d9bed9cf6592fe66343d7c0b"},{"id":"101002P","date":"2023-02-07","commune":"MA4020000","communeName":"BARNSTABLE FIRE DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["402000001G/10001"],"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":"84e2ad7a28fadba50860c2cd1f13f64c5547e6e24e6acf8ad95b72cacaf057f3"},{"id":"101003P","date":"2023-02-07","commune":"MA4020000","communeName":"BARNSTABLE FIRE DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["402000002G/10008"],"sum20":null,"pfas4":{"value":0.0088,"valueText":"0.0088","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":"67f94a44b12484d670d7735fc46b927f81ce192a86f6991d23291c85298af583"},{"id":"101004P","date":"2023-02-07","commune":"MA4020000","communeName":"BARNSTABLE FIRE DISTRICT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["402000003G/10005"],"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":"256bf65f202de27b947d76900fea22df9663fa6ff17c9df42aed56a262629e05"}],"revision":"0d3ce3a51f5c235bc68fae71636174ba2cb3d1dc215bb635c94ef9a2458709c2","us":{"pwsid":"MA4020000","state":"MA","systemType":"CWS","sizeClass":"S","sourceWater":["GW"],"counties":["Barnstable"],"zips":["02601","02630","02632","02637","02668","02675"],"entryPoints":3,"samples":7,"detectedCompounds":["PFOA","PFOS","PFHxS","PFBS","PFHxA","PFPeA"],"treatment":["NMT"],"potentialSources":"Yes","pfoaMax":0.0044,"pfosMax":0.0071,"hazardIndex":0.0052,"centroidSource":"sab"}}