Fountain Valley, CA Water Safety: 87/100 (2026)
2 ZIP codes · 4 water systems · Updated 2026-06-03
Within Fountain Valley, safety indicators for tap water remain above the CA median — documented violations are infrequent and the city's compliance record sits in the upper tier.
How Fountain Valley Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Fountain Valley Water
- Average lead level: 0.006 mg/L.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 10.23.
Who Supplies Your Water in Fountain Valley
Structurally, Fountain Valley, CA's water supply is divided. Federal data identifies 4 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 2 ZIP codes in Fountain Valley, California (population ~56,358), covering 4 community water systems serving approximately 632,423 people region-wide.
No EPA violations recorded across any ZIP codes in Fountain Valley — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Fountain Valley: A (87/100)
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
Fountain Valley water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0060 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
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92708 | B | City of Fountain Valley | 56,747 |
| 92728 | A | City of Fountain Valley | 56,747 |
All ZIP Codes in Fountain Valley
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 Fountain Valley
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
Cost Context: What Remediation Means for Fountain Valley Homeowners
Across Fountain Valley, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Fountain Valley are relatively low compared to home values. The $1,200–$2,600 estimated range is a small fraction of median property value. Home values are 38% above the California average.
Lead Exposure Risk for Children in Fountain Valley
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 Fountain Valley 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.
Flood & Climate Risk in Fountain Valley
Within the NFIP's national dataset, Fountain Valley falls in moderate-exposure territory — 237 documented incidents spanning multiple decades, with 50% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Fountain Valley has a moderate flood history with 237 FEMA claims averaging $880 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>$1,800</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 Fountain Valley, CA