Granada Hills, CA Water Safety: 54/100 (2026)
2 ZIP codes · 2 water systems · Updated 2026-06-03
Water systems serving Granada Hills record elevated violation rates against CA benchmarks — residents in affected areas may want to check their local system's current compliance status.
How Granada Hills Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Granada Hills Residents
- Estimated remediation: $1,000 per household.
- CDC health risk index: 10.71.
Granada Hills's Water Providers
Residential water service in Granada Hills, CA is divided among 2 separate utilities, drawn from 2 systems on file with federal regulators.
Overview
We track water quality and home safety data for 2 ZIP codes in Granada Hills, California (population ~53,248), covering 2 community water systems serving approximately 3,899,512 people region-wide.
No EPA violations recorded across any ZIP codes in Granada Hills — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Granada Hills: 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
Granada Hills water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Granada Hills
- 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 |
|---|---|---|---|
| 91344 | C | Los Angeles-city, Department of Water & Power | 3,875,566 |
| 91394 | D | SAN FERNANDO-CITY, WATER DEPT. | 23,946 |
All ZIP Codes in Granada Hills
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.
Granada Hills 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 Granada Hills
Within the Granada Hills market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Granada Hills are relatively low compared to home values. The $400–$1,700 estimated range is a small fraction of median property value. Home values are 18% above the California average.
Granada Hills: Flood History & Water Damage Risk
Although Granada Hills's flood history doesn't reach high-severity thresholds, NFIP data documents 31 claims and FEMA maps place 50% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Granada Hills has a moderate flood history with 31 FEMA claims averaging $4,090 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 Granada Hills
- 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 Granada Hills, CA