ZIP 11554: your water comes from Town of Hempstead Water Department

Town of Hempstead Water Department is the only community water system that reports serving ZIP 11554 (Nassau County, New York) under EPA's UCMR 5 (reported by the system to EPA). PFAS-4 at the latest sample (2024): below the 3 to 4 ng/L reporting limit. Systems report their own ZIP lists to EPA; if your water bill names another utility, that utility's page carries its own results.

See the full PFAS results for Town of Hempstead Water Department