Cws Southlake System
PWSID: CA1510039
This system has no violations on record.
System Details
| Population Served | 1,112 |
| Service Connections | 813 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | San Jose |
| EPA ZIP on File | 95112 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|---|---|---|
| Copper (90th percentile) | 2.4900 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 2.1000 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 1.9300 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) | 1.6700 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 1.4900 mg/L | 1.300 mg/L | Exceeds Action Level |
| Copper (90th percentile) | 1.4800 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) | 0.0050 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) | 0.0017 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0012 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0010 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 (0 total)
No violations on record for this water system.
Understanding This Water System's Record
Cws Southlake System is a community water system water system that draws from groundwater sources and serves a population of 1,112 in San Jose, 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.