Calabasas, CA Water Safety: 78/100 (2026)
2 ZIP codes · 4 water systems · Updated 2026-06-03
Based on current monitoring, Calabasas holds an above-average drinking water safety record for CA — violations are infrequent and typically minor when they do appear.
How Calabasas Compares
Data: EPA SDWIS Last verified: 2026-06-03
Calabasas Water: The Quick Version
- Average lead level: 0.0044 mg/L.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 10.71.
Water Systems Serving Calabasas
Multiple utilities divide Calabasas, CA's water service — 3 leading providers among 4 on the federal register.
Overview
We track water quality and home safety data for 2 ZIP codes in Calabasas, California (population ~26,205), covering 4 community water systems serving approximately 3,980,516 people region-wide.
No EPA violations recorded across any ZIP codes in Calabasas — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Calabasas: B (78/100)
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
Calabasas water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0044 mg/L (EPA action level: 0.015 mg/L)
- 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 |
|---|---|---|---|
| 91302 | B | Las Virgenes Mwd | 72,602 |
| 91372 | B | Las Virgenes Mwd | 72,602 |
All ZIP Codes in Calabasas
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 Calabasas
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
Calabasas: Remediation Cost in Perspective
In Calabasas, property wealth outpaces what documented remediation typically demands — the equity burden lands well within the low tier.
Remediation costs in Calabasas are relatively low compared to home values. The $400–$1,700 estimated range is a small fraction of median property value. Home values are 127% above the California average.
Protecting Children from Lead in Calabasas
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 Calabasas 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 Calabasas
How does Calabasas's flood record connect to local water quality? The NFIP documents 187 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.
Calabasas has a moderate flood history with 187 FEMA claims averaging $8,186 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.
Deep Dive Reports
Detailed analysis for Calabasas, CA