Fallbrook, CA Water Safety: 93/100 (2026)
2 ZIP codes · 10 water systems · Updated 2026-06-03
Tap water monitoring data for Fallbrook shows a consistently clean picture in CA — few violations on record, compliance well above the median.
How Fallbrook Compares
Data: EPA SDWIS Last verified: 2026-06-03
Fallbrook Water: The Quick Version
- Average lead level: 0.001 mg/L.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 10.18.
Water Systems Serving Fallbrook
10 water systems are tracked federally in Fallbrook, 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 Fallbrook, California (population ~50,905), covering 10 community water systems serving approximately 462,340 people region-wide.
No EPA violations recorded across any ZIP codes in Fallbrook — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Fallbrook: A (93/100)
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
Fallbrook water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0010 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
Areas with No Violations
All ZIP Codes in Fallbrook
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 Fallbrook
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
Fallbrook: Remediation Cost in Perspective
Remediation costs in Fallbrook are small relative to typical property values — the cost-to-value ratio here is favorable.
Remediation costs in Fallbrook are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 6% above the California average.
Protecting Children from Lead in Fallbrook
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 Fallbrook 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 Fallbrook
NFIP records stretching across multiple decades show Fallbrook accumulating 39 claims and carrying 50% of its ZIP codes inside FEMA flood zones — evidence of meaningful exposure that extends beyond isolated incidents. The mechanisms linking flooding to water quality haven't changed: treatment facilities can be overwhelmed, wells can be infiltrated, and distribution systems can experience backflow. For a community at this exposure level, those mechanisms shift from hypothetical to periodically relevant.
Fallbrook has a moderate flood history with 39 FEMA claims averaging $9,912 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>$1,200</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 Fallbrook, CA