{"schemaVersion":2,"id":"us-MA2134000","communeId":"MA2134000","name":"Holden Water Division, DPW","slug":"holden-water-division-dpw-ma2134000","country":"us","region":"Massachusetts","supplier":"HOLDEN WATER DIVISION, DPW","networks":[{"code":"00001/19984","name":"Entry Point to Dist. System (Spring Street Well)"},{"code":"00004/19986","name":"Entry Point to Dist. System (Wachusett Street WTP)"},{"code":"00005/19987","name":"Entry Point to Dist. System (Mason Road Well)"},{"code":"00019/SALISBURYSTINTERTIE","name":"Entry Point to Dist. System (Salisbury Street Intertie)"}],"latestSampleDate":"2024-01-30T00:00:00Z","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, 11 sampling events between 2023-04-10 and 2024-01-30. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Wachusett Street WTP) (00004/19986), 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":"2023-09-12T00:00:00Z","sampleId":"810-77477-1"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"MA2134000","name":"Entry Point to Dist. System (Wachusett Street WTP)","network":"00004/19986"},"qualifiers":[{"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":"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":"810-92227-1","date":"2024-01-30","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, DPW","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00019/SALISBURYSTINTERTIE"],"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":"a4ffbf4acb4085b2bdac87337a2d38863ce6a9f357b92994e12d1bf81c2a6f78"},{"id":"810-77410-1","date":"2023-09-12","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, 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DPW","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00001/19984"],"sum20":null,"pfas4":{"value":0.0041,"valueText":"0.0041","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"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":"d018cc14908a60e9ea6594db6330742fc0c20d326f3a9b7c63455ced464028d0"},{"id":"810-77472-1","date":"2023-09-12","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, DPW","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00005/19987"],"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":"c9b858737cde1282f8614f611cfc21dec0cc484c328a30db702beaf802d843c6"},{"id":"810-77477-1","date":"2023-09-12","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, DPW","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00004/19986"],"sum20":null,"pfas4":{"value":0.0049,"valueText":"0.0049","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"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":"83b16ac579aa174ccb4f1ad2ee45c7749710bc2117dfe5e8e43254d14d99b96b"},{"id":"810-68495-1","date":"2023-07-05","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, DPW","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00019/SALISBURYSTINTERTIE"],"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":"6eb8d5f552e67aee0c0f690fa21689ecbd61d81cb221642a8584aaf2901dad99"},{"id":"810-60993-1","date":"2023-04-25","commune":"MA2134000","communeName":"HOLDEN WATER DIVISION, 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