R.S. MUTUAL WATER COMPANY
PWSID: CA1500458 · Wofford Heights, CA · Serves 67 people
According to EPA Safe Drinking Water Information System (SDWIS), R.S. MUTUAL WATER COMPANY (PWSID CA1500458) in Wofford Heights, CA is listed as a CWS water system covering about 67 people. The same extract lists 91 health-based violation records spanning 2016-2025. Those 91 health-based rows for R.S. MUTUAL WATER COMPANY cover contaminants such as Combined Uranium, Nitrate, Arsenic; they remain historical EPA registry entries, not a current compliance or drinkability score.
R.S. MUTUAL WATER COMPANY has 91 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 3 distinct EPA contaminant codes appear in this system's record, including Combined Uranium, Nitrate, Arsenic. Recorded violations span 2016–2025. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA1500458
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Wofford Heights, CA
- Population Served
- 67
- Health Violations
- Yes (91)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Uranium | 43 | 43 |
| Nitrate | 31 | 31 |
| Arsenic | 17 | 17 |
Violation History (91)
| Contaminant | Health | Date |
|---|---|---|
| Nitrate | Yes | Oct 1, 2025 |
| Combined Uranium | Yes | Oct 1, 2025 |
| Nitrate | Yes | Jul 1, 2025 |
| Nitrate | Yes | Apr 1, 2025 |
| Combined Uranium | Yes | Apr 1, 2025 |
| Nitrate | Yes | Jan 1, 2025 |
| Nitrate | Yes | Oct 1, 2024 |
| Nitrate | Yes | Oct 1, 2024 |
| Combined Uranium | Yes | Oct 1, 2024 |
| Combined Uranium | Yes | Oct 1, 2024 |
| Nitrate | Yes | Jul 1, 2024 |
| Nitrate | Yes | Jul 1, 2024 |
| Combined Uranium | Yes | Jul 1, 2024 |
| Combined Uranium | Yes | Jul 1, 2024 |
| Combined Uranium | Yes | Apr 1, 2024 |
| Combined Uranium | Yes | Apr 1, 2024 |
| Nitrate | Yes | Jan 1, 2024 |
| Nitrate | Yes | Jan 1, 2024 |
| Combined Uranium | Yes | Jan 1, 2024 |
| Combined Uranium | Yes | Jan 1, 2024 |
| Nitrate | Yes | Oct 1, 2023 |
| Nitrate | Yes | Oct 1, 2023 |
| Arsenic | Yes | Oct 1, 2023 |
| Arsenic | Yes | Oct 1, 2023 |
| Arsenic | Yes | Oct 1, 2023 |
| Combined Uranium | Yes | Jul 1, 2023 |
| Combined Uranium | Yes | Jul 1, 2023 |
| Nitrate | Yes | Apr 1, 2023 |
| Nitrate | Yes | Apr 1, 2023 |
| Combined Uranium | Yes | Apr 1, 2023 |
| Combined Uranium | Yes | Apr 1, 2023 |
| Combined Uranium | Yes | Jan 1, 2023 |
| Combined Uranium | Yes | Jan 1, 2023 |
| Nitrate | Yes | Oct 1, 2022 |
| Nitrate | Yes | Oct 1, 2022 |
| Combined Uranium | Yes | Oct 1, 2022 |
| Combined Uranium | Yes | Oct 1, 2022 |
| Combined Uranium | Yes | Jul 1, 2022 |
| Combined Uranium | Yes | Jul 1, 2022 |
| Combined Uranium | Yes | Apr 1, 2022 |
| Combined Uranium | Yes | Apr 1, 2022 |
| Combined Uranium | Yes | Oct 1, 2021 |
| Combined Uranium | Yes | Jul 1, 2021 |
| Combined Uranium | Yes | Apr 1, 2021 |
| Nitrate | Yes | Jan 1, 2021 |
| Arsenic | Yes | Jan 1, 2021 |
| Combined Uranium | Yes | Jan 1, 2021 |
| Nitrate | Yes | Oct 1, 2020 |
| Arsenic | Yes | Oct 1, 2020 |
| Combined Uranium | Yes | Oct 1, 2020 |
| Nitrate | Yes | Jul 1, 2020 |
| Arsenic | Yes | Jul 1, 2020 |
| Combined Uranium | Yes | Jul 1, 2020 |
| Nitrate | Yes | Jan 1, 2020 |
| Arsenic | Yes | Jan 1, 2020 |
| Combined Uranium | Yes | Jan 1, 2020 |
| Arsenic | Yes | Oct 1, 2019 |
| Combined Uranium | Yes | Oct 1, 2019 |
| Nitrate | Yes | Oct 1, 2019 |
| Combined Uranium | Yes | Jul 1, 2019 |
| Arsenic | Yes | Jul 1, 2019 |
| Nitrate | Yes | Jul 1, 2019 |
| Nitrate | Yes | Apr 1, 2019 |
| Combined Uranium | Yes | Apr 1, 2019 |
| Nitrate | Yes | Jan 1, 2019 |
| Combined Uranium | Yes | Jan 1, 2019 |
| Nitrate | Yes | Oct 1, 2018 |
| Combined Uranium | Yes | Oct 1, 2018 |
| Nitrate | Yes | Jul 1, 2018 |
| Combined Uranium | Yes | Jul 1, 2018 |
| Nitrate | Yes | Apr 1, 2018 |
| Arsenic | Yes | Apr 1, 2018 |
| Combined Uranium | Yes | Apr 1, 2018 |
| Nitrate | Yes | Jan 1, 2018 |
| Combined Uranium | Yes | Jan 1, 2018 |
| Arsenic | Yes | Jan 1, 2018 |
| Nitrate | Yes | Oct 1, 2017 |
| Combined Uranium | Yes | Oct 1, 2017 |
| Nitrate | Yes | Jul 1, 2017 |
| Arsenic | Yes | Jul 1, 2017 |
| Combined Uranium | Yes | Jul 1, 2017 |
| Arsenic | Yes | Apr 1, 2017 |
| Combined Uranium | Yes | Apr 1, 2017 |
| Nitrate | Yes | Apr 1, 2017 |
| Arsenic | Yes | Jan 1, 2017 |
| Combined Uranium | Yes | Jan 1, 2017 |
| Arsenic | Yes | Oct 1, 2016 |
| Arsenic | Yes | Jul 1, 2016 |
| Combined Uranium | Yes | Jul 1, 2016 |
| Combined Uranium | Yes | Mar 1, 2016 |
| Arsenic | Yes | Jan 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for R.S. MUTUAL WATER COMPANY?
How many people does R.S. MUTUAL WATER COMPANY serve?
What violations does R.S. MUTUAL WATER COMPANY have?
What contaminants have been found in R.S. MUTUAL WATER COMPANY water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest R.S. MUTUAL WATER COMPANY on cumulative violation count (91) and EPA-reported population served (67). Violation-count peers include TOWN OF BERNICE WATER SYSTEM, DARBONNE WS NORTH, LEADWOOD PWS.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
R.S. MUTUAL WATER COMPANY (CA1500458) is drawn from EPA SDWIS. Nearby county systems in this extract include DELANO, CITY OF; OILDALE MWC; TEJON CASTAC WD - I5 & LAVAL RD; VAUGHN WC INC. Health-based rows (91 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.