{"schemaVersion":2,"id":"us-MA4133000","communeId":"MA4133000","name":"Holbrook Public Works Dept","slug":"holbrook-public-works-dept-ma4133000","country":"us","region":"Massachusetts","supplier":"HOLBROOK PUBLIC WORKS DEPT","networks":[{"code":"00002/EP001","name":"Entry Point to Dist. System (Randolph/Holbrook Water Intertie)"}],"latestSampleDate":"2025-08-25T00:00:00Z","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. 1 entry point sampled, 5 sampling events between 2024-10-02 and 2025-08-25. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Randolph/Holbrook Water Intertie) (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":0.017,"valueText":"0.017","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2025-08-25T00:00:00Z","sampleId":"L2553425-01"},"pfas4DetectedCount":2,"lowerBound":true,"sampledAt":{"commune":"MA4133000","name":"Entry Point to Dist. System (Randolph/Holbrook Water Intertie)","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":"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":"PFDA","valueText":"<0.003","unit":"µg/L"},{"name":"PFDoA","valueText":"<0.003","unit":"µg/L"},{"name":"PFEESA","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":"L2553425-01","date":"2025-08-25","commune":"MA4133000","communeName":"HOLBROOK PUBLIC WORKS DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.017,"valueText":"0.017","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":"b33a75dd0539f8fd86689f89b152aaaf20add9d752a1b1cbd6f9be2f0b9a2a1b"},{"id":"810-146559-1","date":"2025-04-28","commune":"MA4133000","communeName":"HOLBROOK PUBLIC WORKS DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"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":"6b30b9c23bb7108a1d299eae5f3ca708b4f9be87b36e0049728c816a72639fb1"},{"id":"810-135918-1","date":"2025-01-27","commune":"MA4133000","communeName":"HOLBROOK PUBLIC WORKS DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0149,"valueText":"0.0149","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":"4bb0aa398d576c6e4aadfa57e15f4ec47b48a112d10830048e7652ecad6e41ea"},{"id":"810-123280-1","date":"2024-10-02","commune":"MA4133000","communeName":"HOLBROOK PUBLIC WORKS DEPT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00002/EP001"],"sum20":null,"pfas4":{"value":0.0182,"valueText":"0.0182","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":"bec90ad5987b0202893d4dceb5d61a9510c9e465b95fc8b23225f27d6fa8bda3"}],"revision":"0dd75d1c906edb7af7ff6325c3da9685c2c33502189726fbc2ce8726f86ca446","us":{"pwsid":"MA4133000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["SW"],"counties":["Norfolk"],"zips":["02343"],"entryPoints":1,"samples":5,"detectedCompounds":["PFOA","PFOS","PFBS","PFBA","PFHpA","PFHxA","PFPeA"],"treatment":[],"potentialSources":"DK","pfoaMax":0.007,"pfosMax":0.0119,"hazardIndex":0.0015,"centroidSource":"sab"}}