New York tap water
31 of 315 New York water systems with full PFAS testing (10%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 2,239 active community water systems in the EPA file; 279 serve 3,300+ people and have a full PFAS set.
- 176 systems had at least one health-based violation since 2021-10-26.
- 19 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| New York City System | 8,271,000 | No | 0 |
| Suffolk County Water Authority | 1,100,000 | Yes, at one or more sampling points | 0 |
| Mcwa | 525,262 | No | 1 |
| Ocwa | 350,000 | No | 0 |
| Ecwa Direct | 313,380 | No | 0 |
| Veolia Water New York | 270,000 | Yes, at one or more sampling points | 0 |
| Liberty Utilities New York - Lynbrook | 220,000 | No | 5 |
| Yonkers City | 211,569 | No | 0 |
Counties
Nassau County33 systems with full PFAS testingWestchester County26 systems with full PFAS testingOrange County20 systems with full PFAS testingNiagara County14 systems with full PFAS testingSaratoga County12 systems with full PFAS testingSuffolk County10 systems with full PFAS testing
All 41 utilities with a page in New York
- Albany City 98,000
- Binghamton, City of 47,600
- Ecwa Direct 313,380
- Elmira Water Board 54,000
- Endicott Municipal Water Works 45,000
- Freeport (V) 45,000
- Greenburgh Consolidated Wd #1 43,312
- Greenlawn Water District 42,000
- Hempstead (V) 56,000
- Hicksville Wd 48,000
- Jamestown Bpu 46,712
- Jericho Wd 58,000
- Kiryas Joel 51,623
- Latham Water District 85,590
- Liberty Utilities New York - Lynbrook 220,000
- Liberty Utilities New York - Merrick 135,000
- Manhasset Lakeville Wd 43,000
- Massapequa Wd 43,000
- Mcwa 525,262
- Mount Vernon Water department 73,893
- Mvwa - Mohawk Valley Water Authority 126,250
- New York City System 8,271,000
- Niagara Falls Water Board 50,193
- Ocwa 350,000
- Poughkeepsie Townwide Wd 43,000
- Rochester City 210,000
- Schenectady City Water Works 62,000
- South Farmingdale Wd 44,700
- South Huntington Water District 81,760
- Suffolk County Water Authority 1,100,000
- Syracuse City 192,000
- Tonawanda, Town Water dept. 72,571
- Town of Hempstead Water department 110,000
- Troy City PWS 51,401
- Veolia Water New York 270,000
- Veolia Water New York, Inc. Rd-1 146,732
- Veolia Water New York, Inc. Rd-2 57,301
- WA of Western Nassau 120,000
- Westchester Joint Water Works 59,629
- White Plains City 59,559
- Yonkers City 211,569
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.