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 | Dec 11, 2025 |
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 (25)
This water system has 25 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 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | Revised Total Coliform Rule |
| Aug 1, 2024 | Aug 31, 2024 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Aug 31, 2024 | Revised Total Coliform Rule |
| Jul 1, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 19, 2025 | Consumer Confidence Rule |
| Jun 1, 2024 | Jun 30, 2024 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jun 30, 2024 | Revised Total Coliform Rule |
| Jan 1, 2024 | Dec 31, 2024 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2024 | Nitrate Rule |
| Jan 1, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Jan 1, 2018 | Jan 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2018 | Revised Total Coliform Rule |
| Jul 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 1, 2016 | Consumer Confidence Rule |
| Jul 1, 2011 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 7, 2011 | Consumer Confidence Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Jan 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2009 | Lead and Copper Rule |
| Nov 1, 2003 | Nov 30, 2003 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2003 | Total Coliform Rule |
| Sep 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | Total Coliform Rule |
| Sep 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | Total Coliform Rule |
| Sep 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | Total Coliform Rule |
| Oct 1, 1992 | Oct 31, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1992 | Total Coliform Rule |
| Oct 1, 1979 | Oct 31, 1979 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | Radionuclides and Revised Rad 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.