YOSEMITE FORKS EST MUTUAL
PWSID: CA2000527 · Oakhurst, CA · Serves 110 people
According to EPA Safe Drinking Water Information System (SDWIS), YOSEMITE FORKS EST MUTUAL (PWSID CA2000527) in Oakhurst, CA is listed as a CWS water system covering about 110 people. The same extract lists 45 health-based violation records spanning 2016-2025. Those 45 health-based rows for YOSEMITE FORKS EST MUTUAL cover contaminants such as Arsenic, Total Chlorine; they remain historical EPA registry entries, not a current compliance or drinkability score.
YOSEMITE FORKS EST MUTUAL has 45 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. 2 distinct EPA contaminant codes appear in this system's record, including Arsenic, Total Chlorine. 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)
- CA2000527
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Oakhurst, CA
- Population Served
- 110
- Health Violations
- Yes (45)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Arsenic | 44 | 44 |
| Total Chlorine | 1 | 1 |
Violation History (45)
| Contaminant | Health | Date |
|---|---|---|
| Arsenic | Yes | Oct 1, 2025 |
| Arsenic | Yes | Jul 1, 2025 |
| Arsenic | Yes | Apr 1, 2025 |
| Arsenic | Yes | Jan 1, 2025 |
| Arsenic | Yes | Oct 1, 2024 |
| Arsenic | Yes | Oct 1, 2024 |
| Arsenic | Yes | Jul 1, 2024 |
| Arsenic | Yes | Jul 1, 2024 |
| Arsenic | Yes | Apr 1, 2024 |
| Arsenic | Yes | Apr 1, 2024 |
| Arsenic | Yes | Jan 1, 2024 |
| Arsenic | Yes | Jan 1, 2024 |
| Arsenic | Yes | Oct 1, 2023 |
| Arsenic | Yes | Oct 1, 2023 |
| Total Chlorine | Yes | Jul 1, 2023 |
| Arsenic | Yes | Jul 1, 2023 |
| Arsenic | Yes | Jul 1, 2023 |
| Arsenic | Yes | Apr 1, 2023 |
| Arsenic | Yes | Apr 1, 2023 |
| Arsenic | Yes | Jan 1, 2023 |
| Arsenic | Yes | Jan 1, 2023 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Jul 1, 2022 |
| Arsenic | Yes | Apr 1, 2022 |
| Arsenic | Yes | Apr 1, 2022 |
| Arsenic | Yes | Jan 1, 2022 |
| Arsenic | Yes | Oct 1, 2021 |
| Arsenic | Yes | Jul 1, 2021 |
| Arsenic | Yes | Apr 1, 2021 |
| Arsenic | Yes | Jan 1, 2021 |
| Arsenic | Yes | Oct 1, 2020 |
| Arsenic | Yes | Jul 1, 2020 |
| Arsenic | Yes | Apr 1, 2020 |
| Arsenic | Yes | Jan 1, 2020 |
| Arsenic | Yes | Oct 1, 2019 |
| Arsenic | Yes | Jul 1, 2019 |
| Arsenic | Yes | Apr 1, 2019 |
| Arsenic | Yes | Jan 1, 2019 |
| Arsenic | Yes | Jan 1, 2018 |
| Arsenic | Yes | Oct 1, 2017 |
| Arsenic | Yes | Jan 1, 2017 |
| Arsenic | Yes | Oct 1, 2016 |
| Arsenic | Yes | Jul 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for YOSEMITE FORKS EST MUTUAL?
How many people does YOSEMITE FORKS EST MUTUAL serve?
What violations does YOSEMITE FORKS EST MUTUAL have?
What contaminants have been found in YOSEMITE FORKS EST MUTUAL water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest YOSEMITE FORKS EST MUTUAL on cumulative violation count (45) and EPA-reported population served (110). Violation-count peers include MAKAH NEAH BAY, EPCOR - LAKESIDE, HOMESTEAD WC.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
Explore More
About This Data
YOSEMITE FORKS EST MUTUAL (CA2000527) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF MADERA; CHOWCHILLA CITY WATER DEPT; Table Mountain Rancheria; MADERA VALLEY WATER COMPANY. Health-based rows (45 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.