{"schemaVersion":2,"id":"us-MA3254000","communeId":"MA3254000","name":"Rowley Water Department","slug":"rowley-water-department-ma3254000","country":"us","region":"Massachusetts","supplier":"ROWLEY WATER DEPARTMENT","networks":[{"code":"325400002G/10002","name":"HAVERHILL ST. GP WELL # 2 (HAVERHILL ST. GP WELL 2)"},{"code":"325400004G/10004","name":"PINGREE FARM WELLFIELD #5"}],"latestSampleDate":"2023-07-10T00:00:00Z","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 2023-01-10 and 2023-07-10. The page's PFAS values come from the newest sample at HAVERHILL ST. GP WELL # 2 (HAVERHILL ST. GP WELL 2) (325400002G/10002), 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":0.0126,"valueText":"0.0126","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2023-07-10T00:00:00Z","sampleId":"105843P"},"pfas4DetectedCount":2,"lowerBound":true,"sampledAt":{"commune":"MA3254000","name":"HAVERHILL ST. GP WELL # 2 (HAVERHILL ST. GP WELL 2)","network":"325400002G/10002"},"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":"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":"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":"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":"105843P","date":"2023-07-10","commune":"MA3254000","communeName":"ROWLEY WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["325400002G/10002"],"sum20":null,"pfas4":{"value":0.0126,"valueText":"0.0126","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":"3b330a95c7f18b95ae64d21cdbf0824017860ee072ffd2ab1a29adcf536c9120"},{"id":"105844P","date":"2023-07-10","commune":"MA3254000","communeName":"ROWLEY WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["325400004G/10004"],"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":"266aca06b74fd5f6264f539d8865edacedaeb3cad45099c601bb98dc645534da"},{"id":"100307P","date":"2023-01-10","commune":"MA3254000","communeName":"ROWLEY WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["325400002G/10002"],"sum20":null,"pfas4":{"value":0.0134,"valueText":"0.0134","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":"1ee5cc499a3edd203b366d892ff48601639f00f23029d39e603626db2b57ae37"},{"id":"100309P","date":"2023-01-10","commune":"MA3254000","communeName":"ROWLEY WATER DEPARTMENT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["325400004G/10004"],"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":"5051c78b18f17f3b0856bffb6f7d8926b133e4c9dc4752af7c67d30ceece53e0"}],"revision":"5123309d37c4eeaa91907ee554406ccb70b044d1fa68873f04e3de74de069806","us":{"pwsid":"MA3254000","state":"MA","systemType":"CWS","sizeClass":"S","sourceWater":["GW"],"counties":["Essex"],"zips":["01969"],"entryPoints":2,"samples":4,"detectedCompounds":["PFOA","PFOS","6:2 FTS","PFBA","PFHpA","PFHxA","PFPeA"],"treatment":["NMT"],"potentialSources":"DK","pfoaMax":0.0077,"pfosMax":0.0057,"hazardIndex":null,"centroidSource":"sab"}}