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New York Water Quality
883
Utilities in database
18.3M
Residents served
25%
On private wells
3
Key contaminants tracked
Drinking Water in New York
New York has 883 community water systems serving approximately 18.3 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, lead, nitrates. 25% of New York residents rely on private wells. NYSDOH holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in New York
176–200 of 883Oyster Bay Wd
NY2902844 · 8,700 served
Mcwa - Geneva
NY3404515 · 8,532 served
Big Flats Water District 5
NY0701011 · 8,489 served
Potsdam Village
NY4404397 · 8,312 served
Johnstown (c) Water Works
NY1700019 · 8,154 served
Niagara Water Improvement Area
NY3100571 · 8,100 served
Ilion (v) Water Works
NY2102307 · 8,053 served
Colonie Village
NY0100194 · 8,030 served
U.s.m.a. - Lusk System
NY3511887 · 8,000 served
Monticello Village
NY5203337 · 8,000 served
Norwich City
NY0801745 · 8,000 served
Catskill Village
NY1900026 · 8,000 served
Geneseo Village
NY2501017 · 8,000 served
Croton on Hudson Village
NY5903425 · 8,000 served
Fallsburg Who-ls-sf
NY5203324 · 7,850 served
Sea Breeze Wd
NY2701118 · 7,800 served
Sodus-huron-wolcott-butler Csa
NY5801247 · 7,746 served
Royalton Townwide Water Dist.
NY3100580 · 7,710 served
Washingtonville Village
NY3503567 · 7,700 served
Herkimer Village
NY2102306 · 7,606 served
Pine Bush Water District
NY3503553 · 7,600 served
New Paltz (village) Water Dist
NY5503379 · 7,523 served
Locust Valley Wd
NY2902833 · 7,500 served
Williston Park (v)
NY2902858 · 7,287 served
Ecwa Boston
NY1421897 · 7,250 served
Key Contaminant Concerns in New York
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always from human activity — nitrate interferes with the blood's ability to carry oxygen. The United States produces over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
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Data source: Utility data from EPA SDWIS. 883 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-17