RANCHO SAN JOAQUIN MWC
PWSID: CA3500581 · Hollister, CA · Serves 914 people
According to EPA Safe Drinking Water Information System (SDWIS), RANCHO SAN JOAQUIN MWC (PWSID CA3500581) in Hollister, CA is listed as a CWS water system covering about 914 people. The same extract lists 5 health-based violation records spanning 2022-2024. Those 5 health-based rows for RANCHO SAN JOAQUIN MWC cover contaminants such as Arsenic, LEAD AND COPPER RULE REVISIONS; they remain historical EPA registry entries, not a current compliance or drinkability score.
RANCHO SAN JOAQUIN MWC has 5 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. 2 distinct EPA contaminant codes appear in this system's record, including Arsenic, LEAD AND COPPER RULE REVISIONS. Recorded violations span 2022–2024. 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)
- CA3500581
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hollister, CA
- Population Served
- 914
- Health Violations
- Yes (5)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Arsenic | 4 | 4 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
Violation History (5)
| Contaminant | Health | Date |
|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Arsenic | Yes | Jul 1, 2023 |
| Arsenic | Yes | Jul 1, 2023 |
| Arsenic | Yes | Oct 1, 2022 |
| Arsenic | Yes | Oct 1, 2022 |
Frequently Asked Questions
What does EPA SDWIS list for RANCHO SAN JOAQUIN MWC?
How many people does RANCHO SAN JOAQUIN MWC serve?
What violations does RANCHO SAN JOAQUIN MWC have?
What contaminants have been found in RANCHO SAN JOAQUIN MWC water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest RANCHO SAN JOAQUIN MWC on cumulative violation count (5) and EPA-reported population served (914). Violation-count peers include Jemez Pueblo, Acoma Main, OMAHA TRIBE PWS. Population peers include CITY OF CROWELL, LAKE LIVINGSTON INDIAN SPRINGS LAKE, LAKE LAWRENCE.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
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About This Data
RANCHO SAN JOAQUIN MWC (CA3500581) is drawn from EPA SDWIS. Health-based rows in this extract are MCL and Treatment Technique records spanning 2022-2024 covering Arsenic, LEAD AND COPPER RULE REVISIONS. Historical registry entries, 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.