NICASIO VALLEY RANCH MUTUAL
PWSID: CA2100579 · Nicasio, CA · Serves 36 people
According to EPA Safe Drinking Water Information System (SDWIS), NICASIO VALLEY RANCH MUTUAL (PWSID CA2100579) in Nicasio, CA is listed as a CWS water system covering about 36 people. The same extract lists 28 health-based violation records spanning 2015-2021. Those 28 health-based rows for NICASIO VALLEY RANCH MUTUAL cover contaminants such as TTHM; they remain historical EPA registry entries, not a current compliance or drinkability score.
NICASIO VALLEY RANCH MUTUAL has 28 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. 1 distinct EPA contaminant code appears in this system's record, including TTHM. Recorded violations span 2015–2021. 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)
- 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 |
|---|---|---|
| TTHM | 28 | 28 |
Violation History (28)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
| TTHM | Yes | Oct 1, 2017 |
| TTHM | Yes | Oct 1, 2017 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
Frequently Asked Questions
What does EPA SDWIS list for NICASIO VALLEY RANCH MUTUAL?
How many people does NICASIO VALLEY RANCH MUTUAL serve?
What violations does NICASIO VALLEY RANCH MUTUAL have?
What contaminants have been found in NICASIO VALLEY RANCH MUTUAL water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest NICASIO VALLEY RANCH MUTUAL on cumulative violation count (28) and EPA-reported population served (36). Violation-count peers include LAKE CHICOT WATER SUPPLY ASSOCIATION, TONTITOWN WATERWORKS, WALSENBURG CITY OF.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
NICASIO VALLEY RANCH MUTUAL (CA2100579) is drawn from EPA SDWIS. Nearby county systems in this extract include MARIN MUNICIPAL WATER DISTRICT; NPS GGNRA; BOLINAS COMMUNITY PUD; NPS PRNS - BEACHES. Health-based rows (28 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.