{"schemaVersion":2,"id":"us-NY2900000","communeId":"NY2900000","name":"Town of Hempstead Water Department","slug":"town-of-hempstead-water-department-ny2900000","country":"us","region":"New York","supplier":"TOWN OF HEMPSTEAD WATER DEPARTMENT","networks":[{"code":"03456/T03456","name":"Entry Point to Dist. System (East Meadows Wells 1, 3 Treated)"},{"code":"04448/T04448","name":"Entry Point to Dist. System (Eaat Meadows Wells 5 & 11)"},{"code":"04756/T04756","name":"Entry Point to Dist. System (Uniondale Wells 1, 2, 3 & 4 Treated)"},{"code":"05302/T05302","name":"Entry Point to Dist. System (Levittown Well 12 Treated)"},{"code":"05303/T05303","name":"Entry Point to Dist. System (Levittown Well 13 Treated)"},{"code":"05304/T05304","name":"Entry Point to Dist. System (Levittown Well 14 Treated)"},{"code":"05318/T05318","name":"Entry Point to Dist. System (East Meadows Wells 6 & 8 Treated)"},{"code":"05322/T05322","name":"Entry Point to Dist. System (East Meadows Well 10 Treated)"},{"code":"07957/T07957","name":"Entry Point to Dist. System (Roosevelt Field Well 5 & 10 Treated)"},{"code":"08279/T08279","name":"Entry Point to Dist. System (Levittown Wells 7A & 8A Treated)"},{"code":"08474/T08474","name":"Entry Point to Dist. System (Uniondale Wells 5 & 6 GAC Plant)"},{"code":"09521/T09521","name":"Entry Point to Dist. System (Roosevelt Field Wells 7, 11 & 12)"},{"code":"12560/T12560","name":"Entry Point to Dist. System (Levittown Well 5A & 6B Treated)"}],"latestSampleDate":"2024-12-18T00:00:00Z","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), UV treatment (UVL). 13 entry points sampled, 27 sampling events between 2023-07-13 and 2024-12-18. The page's PFAS values come from the newest sample at Entry Point to Dist. System (Levittown Wells 7A & 8A Treated) (08279/T08279), 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":"2024-12-18T00:00:00Z","sampleId":"810-132658-1","nonDetect":true,"upperBound":0.015},"pfas4DetectedCount":0,"lowerBound":true,"sampledAt":{"commune":"NY2900000","name":"Entry Point to Dist. 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