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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
51–75 of 883Plainview Wd
NY2902845 · 34,000 served
Bethpage Wd
NY2902817 · 33,000 served
Rome City
NY3202405 · 32,850 served
West Hempstead Wd
NY2902857 · 32,031 served
Cornell University
NY5417686 · 31,581 served
North Tonawanda City
NY3100572 · 31,568 served
Wa of Great Neck North
NY2902841 · 31,400 served
Bethlehem Wd No 1
NY0100191 · 31,000 served
Poughkeepsie City
NY1330291 · 30,639 served
Middletown City
NY3503534 · 30,000 served
Guilderland Town Wd
NY0100205 · 30,000 served
Ossining Water Department
NY5903451 · 30,000 served
Ithaca City
NY5404416 · 29,457 served
Oswego City
NY3704361 · 29,400 served
Ecwa Lancaster
NY1400421 · 29,018 served
Newburgh City
NY3503549 · 29,000 served
Cortlandt Consolidated Wd
NY5903423 · 28,369 served
Glen Cove City
NY2902826 · 28,000 served
Rotterdam Wd #5
NY4600069 · 28,000 served
Watertown City
NY2202346 · 27,861 served
Auburn
NY0501710 · 27,179 served
Saratoga Springs City
NY4500168 · 26,525 served
Brockport Village
NY2701039 · 25,918 served
New Windsor Consolidated Wd
NY3503580 · 25,667 served
Rockville Centre (v)
NY2902848 · 24,700 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