Coalinga-City
PWSID: CA1010004
This system has no unresolved violations. The most recent violation on record was 2016-10-01.
This system has more violations on record than 88% of water systems in California.
Violation trend: 0.0 per year over the last 5 years, down from 0.2 per year in the previous 5.
System Details
| Population Served | 17,277 |
| Service Connections | 4,026 |
| Water Source | Surface Water |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Coalinga |
| EPA ZIP on File | 93210 |
Areas Served
- Coalinga, Fresno County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0012 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0011 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
Violation History (16 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| Unknown Contaminant | Other | 2016-10-01 | Returned to Compliance | |
| 5000 | MR | 2015-10-01 | Returned to Compliance | |
| 2950 | MCL Measured: 0.0805 MG/L (limit: 0.0800 MG/L) | 2015-10-01 | Yes | Returned to Compliance |
| 0200 | TT | 2015-09-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.0950 MG/L (limit: 0.0800 MG/L) | 2015-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1090 MG/L (limit: 0.0800 MG/L) | 2015-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1160 MG/L (limit: 0.0800 MG/L) | 2015-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1240 MG/L (limit: 0.0800 MG/L) | 2014-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1070 MG/L (limit: 0.0800 MG/L) | 2014-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1192 MG/L (limit: 0.0800 MG/L) | 2004-10-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1123 MG/L (limit: 0.0800 MG/L) | 2004-07-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1011 MG/L (limit: 0.0800 MG/L) | 2004-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1114 MG/L (limit: 0.0800 MG/L) | 2003-04-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1172 MG/L (limit: 0.0800 MG/L) | 2003-01-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1093 MG/L (limit: 0.0800 MG/L) | 2002-09-01 | Yes | Returned to Compliance |
| 2950 | MCL Measured: 0.1063 MG/L (limit: 0.0800 MG/L) | 2002-07-01 | Yes | Returned to Compliance |
Understanding This Water System's Record
Coalinga-City is a community water system water system that draws from surface water sources and serves a population of 17,277 in Coalinga, California. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.