WINTHROP TOWN OF
Washington — Community Water System — PWSID: WA5397750
System Information
| PWSID | WA5397750 |
| System Name | WINTHROP TOWN OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Winthrop |
| ZIP Code | 98862 |
| Address | po box 459 |
| Organization | WINTHROP TOWN OF |
| Phone | — |
Population & Service
| Population Served | 1,350 |
| Service Connections | 484 |
Drinking Water Violations (27)
This water system has 27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2024 | Dec 31, 2024 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | — | |
| Aug 1, 2024 | Aug 31, 2024 | MON | No | No | — | — | — | Resolved | Aug 31, 2024 | — | |
| Jul 1, 2024 | — | Other | No | No | — | — | — | Resolved | Feb 19, 2025 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | No | — | — | — | Resolved | Jun 30, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2022 | — | MR | No | No | — | TT | — | Resolved | Sep 30, 2025 | — | |
| Jan 1, 2018 | Jan 31, 2018 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2018 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Resolved | Nov 1, 2016 | — | |
| Jul 1, 2011 | — | Other | No | No | — | — | — | Resolved | Nov 7, 2011 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | — | |
| Nov 1, 2003 | Nov 30, 2003 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2003 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 2003 | — | |
| Sep 1, 2000 | Sep 30, 2000 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | — | |
| Sep 1, 2000 | Sep 30, 2000 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | — | |
| Sep 1, 2000 | Sep 30, 2000 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | — | |
| Jan 1, 2000 | Jan 1, 2001 | MR | No | No | — | TT | — | Archived | Jan 1, 2001 | — | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1992 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | — |
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.