{"schemaVersion":2,"id":"us-PA4410173","communeId":"PA4410173","name":"Williamsport Mun Water Auth","slug":"williamsport-mun-water-auth-pa4410173","country":"us","region":"Pennsylvania","supplier":"WILLIAMSPORT MUN WATER AUTH","networks":[{"code":"00101/101","name":"Waterdale Finished Water (Waterdale Filter Plant)"}],"latestSampleDate":"2024-12-10T00:00:00Z","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). 1 entry point sampled, 4 sampling events between 2024-03-05 and 2024-12-10. The page's PFAS values come from the newest sample at Waterdale Finished Water (Waterdale Filter Plant) (00101/101). 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":0.0045,"valueText":"0.0045","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"exceeded","sampleDate":"2024-12-10T00:00:00Z","sampleId":"4L01060-01"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":{"commune":"PA4410173","name":"Waterdale Finished Water (Waterdale Filter Plant)","network":"00101/101"},"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":"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":"4L01060-01","date":"2024-12-10","commune":"PA4410173","communeName":"WILLIAMSPORT MUN WATER AUTH","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00101/101"],"sum20":null,"pfas4":{"value":0.0045,"valueText":"0.0045","unit":"µg/L","nonDetect":false,"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"}]},"revision":"4921a31fd00e42133c53a9e4ad8d7bcdea902cc8d499a6843e322ed6425a3c99"},{"id":"4I01050-01","date":"2024-09-03","commune":"PA4410173","communeName":"WILLIAMSPORT MUN WATER AUTH","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00101/101"],"sum20":null,"pfas4":{"value":0.0184,"valueText":"0.0184","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"}]},"revision":"02b7b38fd1b603e98fb51fa51832b9cbbf868ad0c42ed86e0bd17618589af14c"},{"id":"4F00896-01","date":"2024-06-05","commune":"PA4410173","communeName":"WILLIAMSPORT MUN WATER AUTH","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00101/101"],"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":"5e2d62ca734a40d0d365da6e4bfcefa15296a5d061c80db32d59b4fa93099098"},{"id":"4B04395-01","date":"2024-03-05","commune":"PA4410173","communeName":"WILLIAMSPORT MUN WATER AUTH","sourceUrl":"https://www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule","networks":["00101/101"],"sum20":null,"pfas4":{"value":0.0079,"valueText":"0.0079","unit":"µg/L","nonDetect":false,"lowerBound":true,"qualifiers":[{"name":"PFOA","valueText":"<0.004","unit":"µg/L"},{"name":"PFOS","valueText":"<0.004","unit":"µg/L"}]},"revision":"63b46a5fba5dbd42c93e2f58d4232e1de12eb95c8780cdcdba08c1179d6f4d55"}],"revision":"2e1c0a041735d2f45bc1204281768950edb023691d545cf5497205b569249c63","us":{"pwsid":"PA4410173","state":"PA","systemType":"CWS","sizeClass":"L","sourceWater":["MX"],"counties":["Lycoming"],"zips":["17701","17702","17754"],"entryPoints":1,"samples":4,"detectedCompounds":["PFOS","PFHxS","PFNA","PFHxA","PFPeA"],"treatment":["NMT"],"potentialSources":"Yes","pfoaMax":null,"pfosMax":0.0051,"hazardIndex":0.45,"centroidSource":"sab"}}