ZIP 11793: your water comes from Liberty Utilities New York - Merrick

Liberty Utilities New York - Merrick is the only community water system that reports serving ZIP 11793 (Nassau County, New York) under EPA's UCMR 5 (reported by the system to EPA). PFAS-4 at the latest sample (2025): 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 Liberty Utilities New York - Merrick