Moorpark, CA: High Radon Risk — 68/100 (2026)
2 ZIP codes · 10 water systems · Updated 2026-06-03
Moorpark, CA: mid-range safety grade, uneven compliance across service areas.
How Moorpark Compares
Data: EPA SDWIS Last verified: 2026-06-03
Moorpark Water: The Quick Version
- Average lead level: 0.001 mg/L.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 10.84.
Water Systems Serving Moorpark
Multiple utilities divide Moorpark, CA's water service — 3 leading providers among 10 on the federal register.
Overview
We track water quality and home safety data for 2 ZIP codes in Moorpark, California (population ~37,702), covering 10 community water systems serving approximately 237,687 people region-wide.
No EPA violations recorded across any ZIP codes in Moorpark — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Moorpark: C (68/100)
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
Moorpark 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 1 (High Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 93020 | C | Ventura Cwwd No. 1 - Moorpark | 35,514 |
| 93021 | B | Ventura Cwwd No. 1 - Moorpark | 35,514 |
All ZIP Codes in Moorpark
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 Moorpark
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
Moorpark: Remediation Cost in Perspective
While no remediation project is entirely without cost, the relationship between estimated remediation and property values in Moorpark is notably favorable — the equity share is small enough that the household financial perspective is one of proportionality rather than pressure, and most homeowners can treat it as routine planning rather than a significant financial event.
Remediation costs in Moorpark are relatively low compared to home values. The $1,200–$2,400 estimated range is a small fraction of median property value. Home values are 17% above the California average.
Protecting Children from Lead in Moorpark
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 Moorpark 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 Moorpark
50% of ZIP codes in Moorpark are mapped into FEMA-designated flood zones, and the NFIP records 6 claims reflecting a multi-event flood history. That combination places local flood exposure in the range where water-quality implications deserve at least periodic attention.
Moorpark has a moderate flood history with 6 FEMA claims averaging $5,792 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.
What You Can Do in Moorpark
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Moorpark, CA