New York Water Quality
Drinking water data for all 62 counties.
Avg Water Score
40.1
State Grade
D
Counties with Data
57
of 62 total
All New York Counties
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Frequently Asked Questions
Which county in New York has the best water quality?
Orleans County has the highest water quality score in New York at 86.0/100 (Grade: A), based on EPA SDWIS data.
Which county in New York has the most water violations?
Putnam County has among the lowest water quality scores in New York at 4.3/100. See the individual county page for detailed violation history.
Is the tap water safe to drink in New York?
New York has an average water quality score of 40.1/100 based on EPA Safe Drinking Water Act compliance data. Individual county scores vary — check your specific county's page for detailed information.
What contaminants are found in New York water supplies?
Drinking water quality varies by county and water system. The EPA Safe Drinking Water Information System (SDWIS) tracks violations for contaminants like lead, nitrates, bacteria, and disinfection byproducts. See individual county pages for specific contaminant and violation history.
Data Source
Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.
Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.