Basin City Water Sewer District
Washington — Community Water System — PWSID: WA5304461
System Information
| PWSID | WA5304461 |
| System Name | Basin City Water Sewer District |
| System Type | Community Water System |
| Water Source | Ground 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 | Mesa |
| ZIP Code | 99343 |
| Address | PO Box 454 |
| Organization | Basin City Water Sewer District |
| Phone | — |
Population & Service
| Population Served | 1,740 |
| Service Connections | 266 |
Drinking Water Violations (74)
This water system has 74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Dec 31, 2025 | MCL | Yes | No | 10.4 MG/L | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Sep 16, 2025 | — | |
| Jan 1, 2025 | Jul 31, 2025 | MCL | Yes | No | 12 MG/L | 10 mg/L | — | Archived | Jul 31, 2025 | — | |
| May 1, 2024 | May 31, 2024 | MON | No | No | — | — | — | Resolved | May 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Oct 3, 2023 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | No | — | — | — | Resolved | Dec 31, 2022 | — | |
| Sep 1, 2022 | Sep 30, 2022 | MON | No | No | — | — | — | Resolved | Sep 30, 2022 | — | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | No | — | — | — | Resolved | Jul 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Jun 27, 2024 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Nov 1, 2020 | Nov 30, 2020 | MON | No | No | — | — | — | Resolved | Nov 30, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Mar 1, 2019 | Mar 31, 2019 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2019 | — | |
| Jun 1, 2018 | Jun 30, 2018 | MON | No | No | — | — | — | Resolved | Jun 30, 2018 | — | |
| Nov 1, 2017 | Nov 30, 2017 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2017 | — | |
| Jan 1, 2017 | — | MR | No | No | — | TT | — | Resolved | Sep 30, 2020 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Aug 1, 2011 | Aug 31, 2011 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2011 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MCL | Yes | No | 16.9 MG/L | 10 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 11.6 MG/L | 10 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — |
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.