{"schemaVersion":2,"id":"us-MA4244000","communeId":"MA4244000","name":"Randolph Water Department","slug":"randolph-water-department-ma4244000","country":"us","region":"Massachusetts","supplier":"RANDOLPH WATER DEPARTMENT","networks":[{"code":"00002/EP001","name":"EP001/EPTDS from Randolph/Holbrook WTP (RANDOLPH/HOLBROOK WTP)"}],"latestSampleDate":"2024-08-12T00:00:00Z","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). 1 entry point sampled, 5 sampling events between 2023-04-24 and 2024-08-12. The page's PFAS values come from the newest sample at EP001/EPTDS from Randolph/Holbrook WTP (RANDOLPH/HOLBROOK WTP) (00002/EP001). 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":0.0198,"valueText":"0.0198","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2024-08-12T00:00:00Z","sampleId":"810-115986-1"},"pfas4DetectedCount":2,"lowerBound":true,"sampledAt":{"commune":"MA4244000","name":"EP001/EPTDS from Randolph/Holbrook WTP (RANDOLPH/HOLBROOK WTP)","network":"00002/EP001"},"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":"810-115986-1","date":"2024-08-12","commune":"MA4244000","communeName":"RANDOLPH WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0198,"valueText":"0.0198","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":"4caf9f404933bfea003b3bf3d80f1b58f27a37c1cdf6887262a4f3288ffbf4c0"},{"id":"810-91511-1","date":"2024-01-16","commune":"MA4244000","communeName":"RANDOLPH WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0151,"valueText":"0.0151","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":"bb320e7a67decd427d7e4ed3368f66827bb899949b8c26dbe2314f6cba0b43f1"},{"id":"810-79724-1","date":"2023-10-02","commune":"MA4244000","communeName":"RANDOLPH WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0183,"valueText":"0.0183","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":"3f361ad8361ad56be3b1984bcdecb0c6ddb2f608506dbbd05d037c665e752f80"},{"id":"810-69543-1","date":"2023-07-10","commune":"MA4244000","communeName":"RANDOLPH WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0213,"valueText":"0.0213","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"7c8e892dfedaeb83e0f2390d2be01d720f7e76fe46a61d287f243baed8d22cc2"}],"revision":"a3bda4d90ed5c5de8e39f72b7cbb2552c97c0b44bf2433b07edaf3e46b8dda9c","us":{"pwsid":"MA4244000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["SW"],"counties":["Norfolk"],"zips":["02368"],"entryPoints":1,"samples":5,"detectedCompounds":["PFOA","PFOS","PFHxS","PFBA","PFHxA","PFPeA"],"treatment":["NMT"],"potentialSources":"No","pfoaMax":0.0073,"pfosMax":0.013,"hazardIndex":null,"centroidSource":"sab"}}