WALLA WALLA WATER DIVISION
Washington - Community Water System - PWSID: WA5392500
System Information
| PWSID | WA5392500 |
| System Name | WALLA WALLA WATER DIVISION |
| System Type | Community Water System |
| Water Source | Surface 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 | Walla Walla |
| ZIP Code | 99362 |
| Address | 55 Moore St |
| Organization | WALLA WALLA WATER DIVISION |
| Phone | - |
Population & Service
| Population Served | 42,959 |
| Service Connections | 15,281 |
Drinking Water Violations (141)
This water system has 141 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, 2023 | Dec 31, 2023 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2021 | - | |
| Dec 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Dec 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Nov 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Nov 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Oct 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Oct 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Sep 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Sep 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Aug 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Aug 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jul 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jul 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jun 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jun 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| May 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| May 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Apr 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Apr 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Mar 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Mar 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Feb 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Feb 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jan 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Jan 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Dec 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Dec 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Nov 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Nov 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Oct 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Oct 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Sep 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - | |
| Sep 1, 2017 | - | TT | Yes | No | - | - | - | Resolved | May 19, 2020 | - |
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.