MCNEIL ISLAND WATER
Washington — Community Water System — PWSID: WA5352900
System Information
| PWSID | WA5352900 |
| System Name | MCNEIL ISLAND WATER |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Tumwater |
| ZIP Code | 98501 |
| Address | PO Box 41112 |
| Organization | MCNEIL ISLAND WATER |
| Phone | — |
Population & Service
| Population Served | 692 |
| Service Connections | 271 |
Drinking Water Violations (77)
This water system has 77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2025 | — | |
| Nov 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Nov 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Nov 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Oct 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Oct 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Oct 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Sep 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Sep 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Sep 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Aug 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Aug 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Aug 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Dec 28, 2022 | — | |
| Feb 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Apr 21, 2021 | — | |
| Feb 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Apr 21, 2021 | — | |
| Feb 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Apr 21, 2021 | — | |
| Jan 1, 2021 | — | TT | Yes | No | — | — | — | Addressed | — | — | |
| Dec 1, 2020 | — | TT | Yes | No | — | — | — | Addressed | — | — | |
| Nov 1, 2020 | — | TT | Yes | No | — | — | — | Addressed | — | — | |
| Oct 1, 2020 | — | TT | Yes | No | — | — | — | Addressed | — | — | |
| Sep 1, 2020 | — | TT | Yes | No | — | — | — | Addressed | — | — | |
| Aug 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Aug 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Aug 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jul 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jul 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jul 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jun 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jun 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jun 1, 2020 | — | TT | Yes | No | — | — | — | Resolved | Oct 5, 2020 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2012 | — | Other | No | No | — | — | — | Resolved | Apr 4, 2013 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2010 | — |
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.