Sun Valley, CA Water Safety: 54/100 (2026)
2 ZIP codes · 2 water systems · Updated 2026-06-03
The latest EPA cycle for Sun Valley shows a low safety grade within CA — compliance gaps have persisted over multiple reporting periods, and the city currently holds a low grade in available EPA data.
How Sun Valley Compares
Data: EPA SDWIS Last verified: 2026-06-03
Sun Valley Water: The Quick Version
- Estimated remediation: $1,000 per household.
- CDC health risk index: 10.71.
Water Systems Serving Sun Valley
Across Sun Valley, CA, residential water comes from 2 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 2 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 2 ZIP codes in Sun Valley, California (population ~46,153), covering 2 community water systems serving approximately 3,981,169 people region-wide.
No EPA violations recorded across any ZIP codes in Sun Valley — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Sun Valley: D (54/100)
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
Sun Valley water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Sun Valley
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 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 |
|---|---|---|---|
| 91352 | C | Los Angeles-city, Department of Water & Power | 3,875,566 |
| 91353 | D | BURBANK-CITY, WATER DEPT. | 105,603 |
All ZIP Codes in Sun 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.
CDC Health Data for Sun 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
Sun Valley: Remediation Cost in Perspective
In Sun Valley, the equity impact of remediation is proportionally small — not the kind of financial commitment that rises to the level of a genuine planning constraint, but a minor share of what most properties here are worth.
Remediation costs in Sun Valley 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.
Climate-Related Water Risk for Sun Valley
How does Sun Valley's flood record connect to local water quality? The NFIP documents 32 claims — enough to signal recurring events — and 50% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Sun Valley has a moderate flood history with 32 FEMA claims averaging $4,188 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.
What You Can Do in Sun Valley
- 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 Sun Valley, CA