Water Quality in San Luis Obispo, CA (93408)
EPA violation data for public water systems serving ZIP code 93408.
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
Population
13
Water Systems
1
Violations (5yr)
1
Health-Based
Location
Loading map...
Water Systems Serving This Area (13)
Santa Margarita Recreation Area
San Luis Obispo Water Department
City Of Paso Robles Water Division
Atascadero Mutual Water Co
Lopez Project
1 health-basedSlo Cwwd No. 23 - Santa Margarita
Slocsa #10a - Cayucos
Slo Csa No. 16 - Shandon
Chorro Valley Pipeline - Slo County
Nacimiento Water Project
Slo Csa No. 12 - Avila Beach
Slo Cwd No. 10 - Cayucos Wtp
San Luis Obispo Csa 1g- Black Lake
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
San Luis Obispo (93408) 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.
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.