Water Quality in San Diego, CA (91978)
EPA violation data for public water systems serving ZIP code 91978.
No Health-Based Violations
None of the 13 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are3 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 43% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
10,014
Population
13
Water Systems
3
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (13)
San Diego, City Of
Helix Water District
Otay Water District
Sweetwater Authority
Oceanside, City Of
Escondido, City Of
Vista Irrigation District
Campo Hills-County Public Works Wastewtr
Descanso Detention Facility
Live Oak Springs Water System
San Pasqual Academy
All resolvedRancho Del Campo Water System
Barrett Honor Camp
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
San Diego (91978) has more violations than 43% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 3, 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.