Pauma Valley Water Company
PWSID: CA3700934
This system currently has unresolved violations for: 0300, 0800. These violations mean contaminant levels exceeded EPA limits or required treatment was not performed.
This system has more violations on record than 99% of water systems in California.
Violation trend: 15.8 per year over the last 5 years, up from 6.6 per year in the previous 5.
System Details
| Population Served | 185 |
| Service Connections | 74 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Pauma Valley |
| EPA ZIP on File | 92061 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Lead (90th percentile) | 0.0027 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0009 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 0300 | TT | 2010-06-22 | Yes | Open |
| 0800 | TT | 2010-06-22 | Yes | Open |
Violation History (146 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 1045 | MCL Measured: 0.0670 UG/L (limit: 0.0500 UG/L) | 2025-07-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 15.00 MG/L (limit: 10.00 MG/L) | 2025-04-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 14.80 MG/L (limit: 10.00 MG/L) | 2025-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2024-10-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 16.00 MG/L (limit: 10.00 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 16.00 MG/L (limit: 10.00 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 0.0630 MG/L (limit: 0.0500 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 0.0630 MG/L (limit: 0.0500 MG/L) | 2024-07-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 0.0590 MG/L (limit: 0.0500 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 0.0590 MG/L (limit: 0.0500 MG/L) | 2024-04-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 29.00 UG/L (EPA limit: 10 mg/L) | 2024-01-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 29.00 UG/L (EPA limit: 10 mg/L) | 2024-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 25.00 MG/L (limit: 10.00 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 25.00 MG/L (limit: 10.00 MG/L) | 2024-01-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 190.00 UG/L (limit: 50.00 UG/L) | 2023-10-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 190.00 UG/L (limit: 50.00 UG/L) | 2023-10-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 190.00 UG/L (limit: 50.00 UG/L) | 2023-10-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2023-10-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 17.00 MG/L (limit: 10.00 MG/L) | 2023-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 91.20 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 91.20 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 91.20 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 63.70 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 63.70 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 63.70 UG/L (limit: 60.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 200.00 UG/L (limit: 50.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 200.00 UG/L (limit: 50.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 200.00 UG/L (limit: 50.00 UG/L) | 2023-07-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 130.00 UG/L (limit: 50.00 UG/L) | 2023-04-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 130.00 UG/L (limit: 50.00 UG/L) | 2023-04-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 18.00 MG/L (limit: 10.00 MG/L) | 2023-04-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 18.00 MG/L (limit: 10.00 MG/L) | 2023-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 85.50 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 85.50 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 85.50 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 72.90 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 72.90 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Returned to Compliance |
| 2456 | MCL Measured: 72.90 UG/L (limit: 60.00 UG/L) | 2023-04-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 95.00 UG/L (limit: 50.00 UG/L) | 2023-01-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 95.00 UG/L (limit: 50.00 UG/L) | 2023-01-01 | Yes | Acknowledged |
| 1045 | MCL Measured: 95.00 UG/L (limit: 50.00 UG/L) | 2023-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 18.00 MG/L (limit: 10.00 MG/L) | 2023-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 18.00 MG/L (limit: 10.00 MG/L) | 2023-01-01 | Yes | Acknowledged |
| 1040 | MCL Measured: 18.00 MG/L (limit: 10.00 MG/L) | 2023-01-01 | Yes | Acknowledged |
| 2456 | MCL Measured: 81.40 UG/L (limit: 60.00 UG/L) | 2023-01-01 | Yes | Returned to Compliance |
Showing 50 of 144 historical violations.
Understanding This Water System's Record
Pauma Valley Water Company is a community water system water system that draws from groundwater sources and serves a population of 185 in Pauma Valley, 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.