Tap water in Covina, CA — ZIP 91791
4 public water systems serving about 321,642 people. PFAS "forever chemicals" have been detected here.
C
Fair
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 91791
Suburban Water Systems-San Jose
PWSID CA1910205 · serves 170,523 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 6.2 ppt
Azusa Light And Water
PWSID CA1910007 · serves 110,044 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 7.7 ppt — above federal limit
Covina-City, Water Dept.
PWSID CA1910127 · serves 33,300 ·
surface water
0 health-based / 0 total violations (5 yrs)
Valencia Heights Water Co.
PWSID CA1910163 · serves 7,775 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5.7 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology