WOODLAND PARK MUTUAL WATER CO
California - Community Water System - PWSID: CA4000506
System Information
| PWSID | CA4000506 |
| System Name | WOODLAND PARK MUTUAL WATER CO |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | ARROYO GRANDE |
| ZIP Code | 93420 |
| Address | PO BOX 667 |
| Organization | _JOHNSON, GAIL |
| Phone | 805-343-0101 |
Population & Service
| Population Served | 538 |
| Service Connections | 163 |
Drinking Water Violations (22)
This water system has 22 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 | 12 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 12 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2025 | - | |
| Jan 1, 2025 | Mar 31, 2025 | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2025 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | 19 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Sep 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Mar 31, 2024 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Dec 31, 2023 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2024 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2024 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | 11 MG/L | 10 mg/L | 10 | Archived | Jun 30, 2023 | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 6, 2021 | - | |
| Oct 1, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 6, 2021 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2019 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 2, 2019 | - | |
| Jul 1, 1993 | Dec 31, 2003 | MR | No | No | - | TT | - | Resolved | Dec 31, 2003 | - | |
| Dec 1, 1983 | Dec 31, 1983 | Other | No | No | - | - | - | Archived | Dec 31, 1983 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 15 pCi/L | - | Archived | Sep 30, 1982 | - | |
| Oct 30, 1980 | Oct 29, 1981 | MR | No | Yes | - | 15 pCi/L | - | Archived | Oct 29, 1981 | - | |
| Dec 30, 1979 | Jan 29, 1980 | Other | No | No | - | - | - | Archived | Jan 29, 1980 | - |
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.