Tap water in Rancho Santa Margarita, CA — ZIP 92691
3 public water systems serving about 387,005 people. PFAS "forever chemicals" have been detected here.
A
Excellent
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 92691
Moulton Niguel Water District
PWSID CA3010073 · serves 168,315 ·
surface water
0 health-based / 0 total violations (5 yrs)
Santa Margarita Water District
PWSID CA3010101 · serves 165,275 ·
surface water
0 health-based / 0 total violations (5 yrs)
El Toro Water District
PWSID CA3010079 · serves 53,415 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 6.7 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology