NICASIO VALLEY RANCH MUTUAL
PWSID: CA2100579 · Nicasio, CA · Serves 36 people
NICASIO VALLEY RANCH MUTUAL has 28 health-based violations out of 28 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
NICASIO VALLEY RANCH MUTUAL (PWSID CA2100579) 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 36 people in Nicasio, CA, and is subject to primacy enforcement by the California drinking-water program.
The system's federal compliance record contains 28 total violations, with 28 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Total Trihalomethanes (TTHM). Recorded violations span 2015–2021.
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)
- CA2100579
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Nicasio, CA
- Population Served
- 36
- Health Violations
- Yes (28)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Total Trihalomethanes (TTHM) | 28 | 28 |
Violation History (28)
Frequently Asked Questions
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What violations does NICASIO VALLEY RANCH MUTUAL have?
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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.