Water Quality in San Luis Obispo, CA (93428)
EPA violation data for public water systems serving ZIP code 93428.
Past Health-Based Violations
1 health-based violation was found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved.
More violations than 29% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
6,399
Population
8
Water Systems
1
Violations (5yr)
1
Health-Based
Location
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Water Systems Serving This Area (8)
Santa Margarita Recreation Area
San Luis Obispo Water Department
City Of Paso Robles Water Division
Atascadero Mutual Water Co
Cambria Comm Services Dist
1 health-basedCoast Union High School
San Simeon Creek Ranch
Ray W Shamel Park
Contaminants Found
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Luis Obispo (93428) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1.
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.
Whole House Carbon Filter
A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.
Targets:Chlorine, Sediment, Taste & Odor
Look for:NSF/ANSI 42 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.