San Andreas, CA: 6 Health Violations — 76/100 (2026)
2 ZIP codes · 7 water systems · Updated 2026-06-03
Water utilities in San Andreas have maintained a consistent compliance record over recent monitoring periods — the city's above-average grade in CA reflects low violation rates and no systemic health concerns flagged in current data.
How San Andreas Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About San Andreas Water
- Your city's water systems recorded 6 violations in the past 5 years.
- Average lead level: 0.0019 mg/L.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 13.81 — above typical levels.
Who Supplies Your Water in San Andreas
Federal drinking water records identify 7 systems in San Andreas, CA. The leading 3 providers serve the largest share of residential connections, each operating as a separate entity with its own rate authority, infrastructure management, and EPA compliance obligations — so service conditions are not uniform city-wide.
Overview
We track water quality and home safety data for 2 ZIP codes in San Andreas, California (population ~4,696), covering 7 community water systems serving approximately 42,532 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. 6 health-based violations documented.
Home Safety Score
Average Home Safety Score for San Andreas: B (76/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
San Andreas water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0019 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 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 |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 9 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95249 | B | 3 | 3 | Calaveras Pud |
| 95250 | B | 3 | 3 | Ccwd - Ebbetts Pass |
All ZIP Codes in San Andreas
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
Updated daily.
Health Outcomes in San Andreas
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 Andreas Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for San Andreas Homeowners
In San Andreas, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in San Andreas are relatively low compared to home values. The $300–$2,300 estimated range is a small fraction of median property value. Home values are 45% below the California average.
Lead Exposure Risk for Children in San Andreas
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 Andreas 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.
Deep Dive Reports
Detailed analysis for San Andreas, CA