WILLOW PARK MARINA
PWSID: CA0707507 · Oakley, CA · Serves 380 people
WILLOW PARK MARINA has 26 health-based violations out of 26 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
WILLOW PARK MARINA (PWSID CA0707507) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 380 people in Oakley, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 26 total violations, with 26 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Barium. Recorded violations span 2021–2024.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time 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)
- CA0707507
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Oakley, CA
- Population Served
- 380
- Health Violations
- Yes (26)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Barium | 26 | 26 |
Violation History (26)
| Contaminant | Health | Date |
|---|---|---|
| Barium | Yes | Oct 1, 2024 |
| Barium | Yes | Jul 1, 2024 |
| Barium | Yes | Jul 1, 2024 |
| Barium | Yes | Apr 1, 2024 |
| Barium | Yes | Apr 1, 2024 |
| Barium | Yes | Jan 1, 2024 |
| Barium | Yes | Jan 1, 2024 |
| Barium | Yes | Oct 1, 2023 |
| Barium | Yes | Oct 1, 2023 |
| Barium | Yes | Jul 1, 2023 |
| Barium | Yes | Jul 1, 2023 |
| Barium | Yes | Apr 1, 2023 |
| Barium | Yes | Apr 1, 2023 |
| Barium | Yes | Jan 1, 2023 |
| Barium | Yes | Jan 1, 2023 |
| Barium | Yes | Oct 1, 2022 |
| Barium | Yes | Oct 1, 2022 |
| Barium | Yes | Jul 1, 2022 |
| Barium | Yes | Jul 1, 2022 |
| Barium | Yes | Apr 1, 2022 |
| Barium | Yes | Apr 1, 2022 |
| Barium | Yes | Jan 1, 2022 |
| Barium | Yes | Oct 1, 2021 |
| Barium | Yes | Jul 1, 2021 |
| Barium | Yes | Apr 1, 2021 |
| Barium | Yes | Jan 1, 2021 |
Frequently Asked Questions
Is WILLOW PARK MARINA water safe to drink?
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.