Water Quality in San Diego, CA (91901)
EPA violation data for public water systems serving ZIP code 91901.
No Health-Based Violations
None of the 14 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are7 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
18,197
Population
14
Water Systems
7
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (14)
San Diego, City Of
Helix Water District
Otay Water District
Sweetwater Authority
Oceanside, City Of
Escondido, City Of
Vista Irrigation District
Viejas Community System
Crystal Clear Water Company
Alpine Clinic (Sihc)
All resolvedAlpine American Legion
All resolvedImperial Lakes Inc.
All resolvedWillows Association
Riverfront Mutual Water Company
Contaminants Found
Used to disinfect water — generally safe at regulated levels.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
San Diego (91901) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.