TOPPENISH WATER DEPARTMENT
Washington — Community Water System — PWSID: WA5388850
System Information
| PWSID | WA5388850 |
| System Name | TOPPENISH WATER DEPARTMENT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Toppenish |
| ZIP Code | 98948 |
| Address | 408 Washington Ave |
| Organization | TOPPENISH WATER DEPARTMENT |
| Phone | — |
Population & Service
| Population Served | 8,950 |
| Service Connections | 2,636 |
Drinking Water Violations (8)
This water system has 8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Sep 30, 2025 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.