CWSC LOS ALTOS SUBURBAN
Community Water System · California · SAN JOSE
PWSID: CA4310001
Compliant
Population Served
70.0K
Service Connections
18.5K
Total Violations
7
Health-Based Violations
1
Lead & Copper Data
Lead Level
Caution1.50 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Purchased Surface Water
- System Type
- Community Water System
- City
- SAN JOSE
- ZIP Code
- 95112
- Counties Served
- Santa Clara
- Cities Served
- San Jose
- Open Violations
- 0
- State
- California
Violation Summary
7
Total Violations
1
Health-Based
0
Open Now
Most recent violation: 2002-01-01
Explore California Water Quality
See all water systems, lead data, and violation trends for California.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: CA4310001.SafeWater Home