Folsom, CA: 2 Violations — 94/100 (2026)
2 ZIP codes · 7 water systems · Updated 2026-06-03
Compared to statewide averages in CA, Folsom scores well — health violations are below the norm and systems generally operate within federal standards.
How Folsom Compares
Data: EPA SDWIS Last verified: 2026-06-03
Folsom Water: The Quick Version
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.0054 mg/L.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 11.31.
Water Systems Serving Folsom
7 water systems are tracked federally in Folsom, CA. The top 3 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
Overview
We track water quality and home safety data for 2 ZIP codes in Folsom, California (population ~77,952), covering 7 community water systems serving approximately 168,323 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Folsom: A (94/100)
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
Folsom water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0054 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 2 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95630 | A | 1 | 0 | Folsom, City of - Main |
| 95763 | A | 1 | 0 | Folsom, City of - Main |
All ZIP Codes in Folsom
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.
CDC Health Data for Folsom
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
Key Contaminants Detected in Folsom
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Folsom: Remediation Cost in Perspective
Low proportionality — that's the Folsom picture when remediation costs are placed against typical home equity.
Remediation costs in Folsom are relatively low compared to home values. The $400–$1,700 estimated range is a small fraction of median property value. Home values are 5% below the California average.
Protecting Children from Lead in Folsom
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 Folsom 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.
Climate-Related Water Risk for Folsom
Flood exposure in Folsom is meaningful by NFIP measures — 28 claims on record and 50% of ZIP codes carrying FEMA flood zone designations. That level of activity makes flood history a relevant factor when evaluating local water quality over time.
Folsom has a moderate flood history with 28 FEMA claims averaging $18,543 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$1,000</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Folsom, CA