Fcwwd 41/Shaver Lake
PWSID: CA1010017
This system has no unresolved violations. The most recent violation on record was 2019-12-01.
This system has more violations on record than 76% of water systems in California.
Violation trend: 0.0 per year over the last 5 years, down from 0.6 per year in the previous 5.
System Details
| Population Served | 2,722 |
| Service Connections | 951 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Fresno |
| EPA ZIP on File | 93721 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Copper (90th percentile) | 5.5000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 5.1000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 4.8000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 3.6000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 3.1000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 3.0000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.9000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.9000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.8000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.5000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.3000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.2000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 1.8000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 1.4000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Lead (90th percentile) | 0.0091 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0083 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0080 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0078 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0070 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0060 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0059 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0058 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0056 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0049 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0039 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0035 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0028 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0017 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 (7 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 8000 | MON | 2019-12-01 | Major | Returned to Compliance |
| 1094 | MCL Measured: 28.00 MFL (limit: 7.00 MFL) | 2018-04-01 | Yes | Returned to Compliance |
| 1040 | MR | 2017-01-01 | Major | Returned to Compliance |
| 7000 | Other | 2009-08-13 | Returned to Compliance | |
| 5000 | MR | 2007-10-01 | Returned to Compliance | |
| 7000 | Other | 2007-07-01 | Returned to Compliance | |
| 5000 | TT | 2006-04-30 | Yes | Returned to Compliance |
Understanding This Water System's Record
Fcwwd 41/Shaver Lake is a community water system water system that draws from groundwater sources and serves a population of 2,722 in Fresno, 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.