HILMAR COUNTY WATER DISTRICT
PWSID: CA2410012 · Hilmar, CA · Serves 5,504 people
According to EPA Safe Drinking Water Information System (SDWIS), HILMAR COUNTY WATER DISTRICT (PWSID CA2410012) in Hilmar, CA is listed as a CWS water system covering about 5,504 people. The same extract lists 14 health-based violation records spanning 2023-2025. Those 14 health-based rows for HILMAR COUNTY WATER DISTRICT cover contaminants such as Nitrate; they remain historical EPA registry entries, not a current compliance or drinkability score.
HILMAR COUNTY WATER DISTRICT has 14 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 Nitrate. Recorded violations span 2023–2025. 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)
- CA2410012
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hilmar, CA
- Population Served
- 5,504
- Health Violations
- Yes (14)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Nitrate | 14 | 14 |
Violation History (14)
| Contaminant | Health | Date |
|---|---|---|
| Nitrate | Yes | Nov 1, 2025 |
| Nitrate | Yes | Oct 1, 2025 |
| Nitrate | Yes | Jul 1, 2025 |
| Nitrate | Yes | Mar 1, 2025 |
| Nitrate | Yes | Feb 1, 2025 |
| Nitrate | Yes | Jan 1, 2025 |
| Nitrate | Yes | Dec 1, 2024 |
| Nitrate | Yes | Jul 1, 2024 |
| Nitrate | Yes | May 1, 2024 |
| Nitrate | Yes | Apr 1, 2024 |
| Nitrate | Yes | Mar 1, 2024 |
| Nitrate | Yes | Feb 1, 2024 |
| Nitrate | Yes | Jan 1, 2024 |
| Nitrate | Yes | Jan 1, 2023 |
Frequently Asked Questions
What does EPA SDWIS list for HILMAR COUNTY WATER DISTRICT?
How many people does HILMAR COUNTY WATER DISTRICT serve?
What violations does HILMAR COUNTY WATER DISTRICT have?
What contaminants have been found in HILMAR COUNTY WATER DISTRICT water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest HILMAR COUNTY WATER DISTRICT on cumulative violation count (14) and EPA-reported population served (5,504). Violation-count peers include URIAH HEEPS SPRING WATER SYSTEM, UNIVERSITY OF ALASKA - FAIRBANKS, ELBA, THE WW AND EB OF THE CITY OF. Population peers include BRIDGEPORT UTILITIES BOARD, OSCEOLA WATER WORKS, CITY OF SINTON.
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).
Nearby Water Systems
Explore More
About This Data
HILMAR COUNTY WATER DISTRICT (CA2410012) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF MERCED; CITY OF LOS BANOS; CITY OF ATWATER; CITY OF LIVINGSTON. Health-based rows (14 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.