Rock Island Water Dept City of
Washington — Community Water System — PWSID: WA5373401
System Information
| PWSID | WA5373401 |
| System Name | Rock Island Water Dept City 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 | Rock Island |
| ZIP Code | 98850 |
| Address | PO Box 99 |
| Organization | Rock Island Water Dept City of |
| Phone | — |
Population & Service
| Population Served | 3,226 |
| Service Connections | 540 |
Drinking Water Violations (14)
This water system has 14 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, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 26, 2025 | Consumer Confidence Rule |
| Jan 1, 2022 | Dec 31, 2022 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2022 | Nitrate Rule |
| Jan 1, 2022 | Dec 31, 2022 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2022 | Nitrate Rule |
| Jan 1, 2020 | Dec 31, 2020 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | Nitrate Rule |
| Jan 1, 2020 | Dec 31, 2020 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | Nitrate Rule |
| Mar 1, 2016 | Mar 31, 2016 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2016 | Total Coliform Rule |
| Feb 1, 2004 | Feb 29, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Feb 29, 2004 | Total Coliform Rule |
| Oct 1, 1998 | Oct 31, 1998 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1998 | Total Coliform Rule |
| Aug 1, 1994 | Aug 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 1994 | Total Coliform Rule |
| Nov 1, 1992 | Nov 30, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1992 | Total Coliform Rule |
| Aug 1, 1992 | Aug 31, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1992 | Total Coliform Rule |
| Jul 1, 1992 | Jul 31, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Jul 31, 1992 | Total Coliform Rule |
| Apr 1, 1992 | Apr 30, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Apr 30, 1992 | Total Coliform Rule |
| Mar 1, 1992 | Mar 31, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1992 | Total Coliform 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.