{"schemaVersion":2,"id":"us-MA2282000","communeId":"MA2282000","name":"Sterling Water Department","slug":"sterling-water-department-ma2282000","country":"us","region":"Massachusetts","supplier":"STERLING WATER DEPARTMENT","networks":[{"code":"228200003G/MULT1","name":"REDEMPTION ROCK TRAIL WTP (FINISHED) (REDEMPTION ROCK TRAIL WELL 3/4/5)"},{"code":"2282000067G/MULT3","name":"WORCESTER RD. WTP (FINISHED BLEND 2A/2B) (WORCESTER ROAD WELL 2A/B)"}],"latestSampleDate":"2024-08-14T00:00:00Z","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). 2 entry points sampled, 4 sampling events between 2024-02-05 and 2024-08-14. The page's PFAS values come from the newest sample at WORCESTER RD. WTP (FINISHED BLEND 2A/2B) (WORCESTER ROAD WELL 2A/B) (2282000067G/MULT3), 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":0.0052,"valueText":"0.0052","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2024-08-14T00:00:00Z","sampleId":"119642P"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"MA2282000","name":"WORCESTER RD. WTP (FINISHED BLEND 2A/2B) (WORCESTER ROAD WELL 2A/B)","network":"2282000067G/MULT3"},"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":"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":"PFHxA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMBA","valueText":"<0.003","unit":"µg/L"},{"name":"PFMPA","valueText":"<0.004","unit":"µg/L"},{"name":"PFPeA","valueText":"<0.003","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":"119641P","date":"2024-08-14","commune":"MA2282000","communeName":"STERLING WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["228200003G/MULT1"],"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":"8cbb3ca5fb00867bf56bd3d0c7ff858dde9f569d86f4c8e8422f8c9bb0c7f426"},{"id":"119642P","date":"2024-08-14","commune":"MA2282000","communeName":"STERLING WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["2282000067G/MULT3"],"sum20":null,"pfas4":{"value":0.0052,"valueText":"0.0052","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":"fb5497cbecc912c748da0b76bc2d00768d39419f696bb35385bf29db1c82d139"},{"id":"112938P","date":"2024-02-05","commune":"MA2282000","communeName":"STERLING WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["228200003G/MULT1"],"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":"3d4eb9b24edb9c9584da85c3657969f7a2e8c84da0f93d7bd58ec1985cfe91c8"},{"id":"112939P","date":"2024-02-05","commune":"MA2282000","communeName":"STERLING WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["2282000067G/MULT3"],"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":"96b3d6d8735a81a689e57d0d6c5b0eac22e7ba8b47bfaa5c1408a9f174767bab"}],"revision":"69d481a4a47c93d8ae026571cf4f65c8c5270376cc865c0d27c5790f8e0e7d75","us":{"pwsid":"MA2282000","state":"MA","systemType":"CWS","sizeClass":"S","sourceWater":["GW"],"counties":["Worcester"],"zips":["01564"],"entryPoints":2,"samples":4,"detectedCompounds":["PFOS"],"treatment":["NMT"],"potentialSources":"No","pfoaMax":null,"pfosMax":0.0052,"hazardIndex":null,"centroidSource":"sab"}}