SIERRA PARK WATER COMPANY INC.
PWSID: CA5510016 · Mi-wuk Village, CA · Serves 400 people
SIERRA PARK WATER COMPANY INC. has 5 health-based violations out of 5 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
SIERRA PARK WATER COMPANY INC. (PWSID CA5510016) 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 400 people in Mi-wuk Village, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 5 total violations, with 5 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Chromium, Mercury, Gross Alpha. Recorded violations span 2023–2024.
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)
- CA5510016
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mi-wuk Village, CA
- Population Served
- 400
- Health Violations
- Yes (5)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Chromium | 2 | 2 |
| Mercury | 2 | 2 |
| Gross Alpha | 1 | 1 |
Violation History (5)
| Contaminant | Health | Date |
|---|---|---|
| Gross Alpha | Yes | Oct 17, 2024 |
| Chromium | Yes | Apr 1, 2023 |
| Chromium | Yes | Apr 1, 2023 |
| Mercury | Yes | Apr 1, 2023 |
| Mercury | Yes | Apr 1, 2023 |
Frequently Asked Questions
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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.