{"schemaVersion":2,"id":"us-MA3163000","communeId":"MA3163000","name":"Lynn Water and Sewer Comm","slug":"lynn-water-and-sewer-comm-ma3163000","country":"us","region":"Massachusetts","supplier":"LYNN WATER AND SEWER COMM","networks":[{"code":"00007/11951","name":"Entry Point to Dist. System (Raymond Reardon WTP)"}],"latestSampleDate":"2023-11-01T00:00:00Z","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, 4 sampling events between 2023-02-08 and 2023-11-01. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Raymond Reardon WTP) (00007/11951). 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":0.0047,"valueText":"0.0047","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2023-11-01T00:00:00Z","sampleId":"810-83569-1"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"MA3163000","name":"Entry Point to Dist. System (Raymond Reardon WTP)","network":"00007/11951"},"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":"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":"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":"810-83569-1","date":"2023-11-01","commune":"MA3163000","communeName":"LYNN WATER AND SEWER COMM","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00007/11951"],"sum20":null,"pfas4":{"value":0.0047,"valueText":"0.0047","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":"d57ed220fcb135899be3739c3f468a6a4fd44f3c4dfcef8eb22f446c412887f0"},{"id":"810-72383-1","date":"2023-08-02","commune":"MA3163000","communeName":"LYNN WATER AND SEWER COMM","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00007/11951"],"sum20":null,"pfas4":{"value":0.0043,"valueText":"0.0043","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":"b08076fb9b7d34b140898d06648d6dd1bfceed1f1981437c4e04e3190f2804eb"},{"id":"810-62004-1","date":"2023-05-03","commune":"MA3163000","communeName":"LYNN WATER AND SEWER COMM","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00007/11951"],"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":"bf2b158e535a2e756ecfb589ced184a50612fa469f612460d37aa4a68681d878"},{"id":"RAYMOND REARDON WTP/00007","date":"2023-02-08","commune":"MA3163000","communeName":"LYNN WATER AND SEWER COMM","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00007/11951"],"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":"304d7d8bf0863efffa8aac4e46b93702ab4c1b972e699796fb3e16078a2a0541"}],"revision":"f9255d95886afc061bcfa62d19a9af445b585ccfd1fc266c2d1876424776ac5f","us":{"pwsid":"MA3163000","state":"MA","systemType":"CWS","sizeClass":"L","sourceWater":["SW"],"counties":["Essex"],"zips":["01901","01902","01903","01904","01905"],"entryPoints":1,"samples":4,"detectedCompounds":["PFOA","PFBS","PFBA","PFHxA","PFPeA"],"treatment":["NMT"],"potentialSources":"No","pfoaMax":0.0047,"pfosMax":null,"hazardIndex":0.0015,"centroidSource":"sab"}}