Water Quality in San Diego, CA (92078)
EPA violation data for public water systems serving ZIP code 92078.
Active Health Violations
6 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 95% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
53,605
Population
11
Water Systems
83
Violations (5yr)
6
Health-Based
Location
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Water Systems Serving This Area (11)
San Diego, City Of
Helix Water District
Otay Water District
Sweetwater Authority
Oceanside, City Of
Escondido, City Of
Vista Irrigation District
Aspen Grove Mobile Home Park
1 health-basedOcotillo Oasis, Llc
5 health-basedWagon Wheel Mobile Home Park
All resolvedQuesthaven Municipal Water District
All resolvedContaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Used to disinfect water — generally safe at regulated levels.
Monitoring for chemicals formed during water treatment disinfection.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Diego (92078) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 83.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.