Tap water in Altadena, CA — ZIP 91001
5 public water systems serving about 183,876 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 91001
Pasadena Water And Power
PWSID CA1910124 · serves 165,448 ·
surface water
0 health-based / 0 total violations (5 yrs)
Lincoln Avenue Water Co.
PWSID CA1910063 · serves 8,721 ·
surface water
0 health-based / 0 total violations (5 yrs)
Rubio Canon Land & Water Association
PWSID CA1910140 · serves 6,646 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 19 ppt — above federal limit
Las Flores Water Co.
PWSID CA1910061 · serves 2,211 ·
surface water
0 health-based / 0 total violations (5 yrs)
Kohala Ranch Water Co.
PWSID HI0000151 · serves 850 ·
groundwater
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