Tap water in Westlake Village, CA — ZIP 91377
2 public water systems serving about 33,442 people.
A
Excellent
Water systems serving 91377
California Water Service Co - Westlake
PWSID CA5610016 · serves 19,544 ·
surface water
0 health-based / 0 total violations (5 yrs)
Triunfo Water & Sanitation District
PWSID CA5610043 · serves 13,898 ·
surface water
0 health-based / 0 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology