Wadsworth
California — Community Water System — PWSID: 093200169
System Information
| PWSID | 093200169 |
| System Name | Wadsworth |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 2, 1984 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | Nixon |
| ZIP Code | 89424 |
| Address | P.O. Box 256 |
| Organization | Pyramid Lake Paiute Tribe |
| Phone | 7755741000 |
Population & Service
| Population Served | 950 |
| Service Connections | 231 |
Drinking Water Violations (156)
This water system has 156 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, 2025 | Jul 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2025 | — | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jul 31, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 28, 2025 | — | |
| Jan 1, 2025 | Mar 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2025 | — | |
| Jan 1, 2025 | Mar 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2025 | — | |
| Jan 1, 2025 | Mar 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2025 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Jun 1, 2024 | — | MR | No | Yes | — | — | — | Unaddressed | — | — | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Sep 1, 2023 | — | MR | No | Yes | — | — | — | Unaddressed | — | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Jul 1, 2023 | — | MR | No | Yes | — | — | — | Unaddressed | — | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Apr 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2024 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 1, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Nov 1, 2022 | Nov 30, 2022 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 12, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Jun 1, 2022 | — | RPT | No | No | — | — | — | Resolved | Jul 25, 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 | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Dec 17, 2021 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2024 | — | |
| Dec 17, 2021 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Dec 17, 2021 | — | TT | Yes | No | — | — | — | Resolved | Jun 17, 2022 | — | |
| Dec 17, 2021 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2024 | — | |
| Jul 1, 2021 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Apr 30, 2021 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2021 | — | |
| Apr 1, 2021 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Mar 1, 2021 | — | Other | No | No | — | — | — | Resolved | Jun 26, 2025 | — | |
| Mar 1, 2021 | Mar 31, 2021 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 0.080 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 | — | 10 mg/L | — | Resolved | Aug 25, 2020 | — | |
| Jan 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Jul 19, 2024 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | — | MR | No | Yes | — | — | — | Resolved | Apr 23, 2019 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 30 ug/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2016 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 2016 | — |
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.