Newbury Park, CA: High Radon Risk — 43/100 (2026)
2 ZIP codes · 3 water systems · Updated 2026-06-03
Water compliance in Newbury Park, CA ranks below average — documented gaps in multiple service areas.
How Newbury Park Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Newbury Park Residents
- Estimated remediation: $1,800 per household.
- CDC health risk index: 10.84.
Newbury Park's Water Providers
Water service in Newbury Park, CA is split across 3 utilities out of 3 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 2 ZIP codes in Newbury Park, California (population ~43,628), covering 3 community water systems serving approximately 119,966 people region-wide.
No EPA violations recorded across any ZIP codes in Newbury Park — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Newbury Park: D (43/100)
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
Newbury Park water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Newbury Park
- 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 |
|---|---|---|---|
| 91319 | D | CITY OF THOUSAND OAKS WATER DEPARTMENT | 53,157 |
| 91320 | D | CITY OF THOUSAND OAKS WATER DEPARTMENT | 53,157 |
All ZIP Codes in Newbury Park
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.
Newbury Park Community Health Snapshot
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
How Remediation Costs Compare in Newbury Park
Within the Newbury Park market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Newbury Park 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 24% above the California average.
Newbury Park: Flood History & Water Damage Risk
Flood history in Newbury Park spans 36 NFIP claims and 50% flood zone coverage — enough to place it in moderate-exposure territory where flood events are genuinely recurring rather than statistical outliers. That distinction matters for water quality assessment because the connection between flooding and water safety is not uniform across communities. In low-exposure areas, flooding rarely generates the conditions needed to compromise treatment or distribution infrastructure. In high-exposure areas, it can do so repeatedly. Moderate-exposure communities sit in between: flood events occur with enough frequency to make periodic infrastructure stress a reasonable concern, particularly for private well owners and residents in lower-elevation FEMA-designated zones.
Newbury Park has a moderate flood history with 36 FEMA claims averaging $6,574 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 Newbury Park
- 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.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Newbury Park, CA