San Luis Obispo, CA: 1 Health Violation - Home Safety 83/100
8 ZIP codes · 7 water systems · Updated
ZipCheckup grade for San Luis Obispo: B.
This ZIP looks solid, with a few items worth a quick check.
Although water quality varies across any metro, San Luis Obispo's systems collectively post above-average compliance scores for CA - and documented violations are few.
How San Luis Obispo Compares
Data: EPA SDWIS
What You Should Know About San Luis Obispo Water
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.0007 mg/L.
- Estimated remediation: $1,225 per household.
- CDC health risk index: 11.26.
Who Supplies Your Water in San Luis Obispo
With 3 utilities splitting service in San Luis Obispo, CA, water accountability is distributed across 7 systems on the federal record.
- B
- B
- B
Overview
We track home safety data for 8 ZIP codes in San Luis Obispo, California, covering 7 community water systems serving approximately 63,932 people. The EPA snapshots used for this build directly map water systems to 5 of 8 ZIP codes.
2 of 5 ZIP codes with a reported violation count in the available EPA record (40%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for San Luis Obispo: B (83/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
San Luis Obispo water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0007 mg/L (EPA action level: 0.015 mg/L)
- 0 of 5 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 8 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
| E. coli | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 93401 | B | 1 | 1 | San Luis Obispo Water Department |
| 93409 | B | 1 | 0 | California Mens Colony |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 93405 | B | San Luis Obispo Water Department | 47,788 |
| 93407 | — | San Luis Obispo Water Department | 47,788 |
| 93410 | — | San Luis Obispo Water Department | 47,788 |
All ZIP Codes in San Luis Obispo
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in San Luis Obispo
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in San Luis Obispo Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for San Luis Obispo Homeowners
Given current San Luis Obispo valuations, the remediation-to-property-value ratio is low - most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in San Luis Obispo are relatively low compared to home values. The $500–$2,163 estimated range is a small fraction of median property value. Home values are 28% above the California average.
Lead Exposure Risk for Children in San Luis Obispo
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in San Luis Obispo appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in San Luis Obispo
Historical NFIP data for San Luis Obispo contains 173 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $13,721. Among ZIP codes with claim records, 33% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$1,225</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for San Luis Obispo, CA