ECWA WILLIAMSVILLE
New York — Community Water System — PWSID: NY1400541
System Information
| PWSID | NY1400541 |
| System Name | ECWA WILLIAMSVILLE |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Inactive |
| Owner Type | Local |
| EPA Region | 02 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 29, 1981 |
| Last Reported | Jun 13, 2025 |
Location & Contact
| State | New York |
| City | BUFFALO |
| ZIP Code | 14203 |
| Address | 350 ELLICOTT SQUARE BUILDING |
| Organization | ERIE COUNTY WATER AUTHORITY |
| Phone | 716-849-8484 |
Population & Service
| Population Served | 5,573 |
| Service Connections | 2,056 |
Drinking Water Violations (4)
This water system has 4 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2013 | Dec 31, 2013 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2013 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2013 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2013 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2013 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.