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Water quality · New York

Water quality in New York

Water quality (EPA SDWIS) data for ZIP codes in New York. Pick a ZIP below to dive into the water quality summary.

Last verified 2026-05-13 · methodology

What lands here

Pages show the CWS serving the address, any health-based violations in the last 3 years, most recent lead and copper sampling result, and a link to the primary SDWIS record.

Source & refresh

EPA SDWIS. Refreshed quarterly (federal mandate). Primary source →

New York top concern

Lead service lines (older cities), coastal flood

New York has LCRR lead-service-line obligations in NYC (DEP), Buffalo, Rochester, Syracuse, Albany. Coastal AE/VE zones along NYC, Long Island, Hudson Valley. Catskill/Delaware watersheds give NYC water unusual quality but require ongoing EPA SDWIS oversight.

See New York state page for the full state-level rollup across all 12 dimensions.

Read more on water quality

Editorial deep-dives explaining the source data, its limits, and how to read it.

26 New York ZIPs