{"schemaVersion":2,"id":"us-PA1090005","communeId":"PA1090005","name":"Aqua PA Chalfont","slug":"aqua-pa-chalfont-pa1090005","country":"us","region":"Pennsylvania","supplier":"AQUA PA CHALFONT","networks":[{"code":"101/EP101","name":"WELL #8A EP (WELL #8A)"},{"code":"102/EP102","name":"WELL #11 EP (WELL #11)"},{"code":"105/EP105","name":"WELL #14 EP (WELL #14)"}],"latestSampleDate":"2025-01-13T00:00:00Z","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: granular activated carbon (GAC), no PFAS treatment (NMT). 3 entry points sampled, 7 sampling events between 2024-02-20 and 2025-01-13. The page's PFAS values come from the newest sample at WELL #11 EP (WELL #11) (102/EP102), 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":null,"valueText":"<0.015","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-01-13T00:00:00Z","sampleId":"125298R","nonDetect":true,"upperBound":0.015},"pfas4DetectedCount":0,"lowerBound":true,"sampledAt":{"commune":"PA1090005","name":"WELL #11 EP (WELL #11)","network":"102/EP102"},"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"},{"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":"inconclusive"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"125298R","date":"2025-01-13","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["102/EP102"],"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":"0d02b69c7de028e33cd5f2506f743249502d752c2cdf7742a0e361759766da4a"},{"id":"120016P","date":"2024-08-19","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["101/EP101"],"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":"f6825d39f29ece355bdf5da86a6abbd5e63df7840cdd8f8c744221e2bba7e7d2"},{"id":"120018P","date":"2024-08-19","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["105/EP105"],"sum20":null,"pfas4":{"value":0.014,"valueText":"0.014","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":"78c4f0e215ce9841a5290f6d1d9d9442f3395b46dc137b4a78cc87216854b426"},{"id":"113351P","date":"2024-02-20","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["101/EP101"],"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":"94ac719c824e483db1a947d7d7a586ee763c033412bf1ab2c8337043dc8b26d2"},{"id":"113352P","date":"2024-02-20","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["102/EP102"],"sum20":null,"pfas4":{"value":0.0309,"valueText":"0.0309","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFNA","valueText":"<0.004","unit":"µg/L"}]},"revision":"554cf4780360d5d4d6c828168bcaf5d7ed3838f90b39e0adfed0b9e4e9b3b382"},{"id":"113353P","date":"2024-02-20","commune":"PA1090005","communeName":"AQUA PA CHALFONT","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["105/EP105"],"sum20":null,"pfas4":{"value":0.0147,"valueText":"0.0147","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":"13a61fdafe1781f9bd849b0720984eb8730a05bd88b1f2863e0b671e3f5e6453"}],"revision":"e8ec1df3c91c77b57832966ff60cb38db5247e522744df9b2b0453cab808ad42","us":{"pwsid":"PA1090005","state":"PA","systemType":"CWS","sizeClass":"S","sourceWater":["GW"],"counties":["Bucks"],"zips":["18901","18914","19020"],"entryPoints":3,"samples":7,"detectedCompounds":["PFOA","PFOS","PFHxS","PFBS","PFBA","PFHpA","PFHxA","PFPeA"],"treatment":["GAC","NMT"],"potentialSources":"No","pfoaMax":0.0088,"pfosMax":0.019,"hazardIndex":null,"centroidSource":"sab"}}