Moraga, CA: 42 Health Violations — 52/100 (2026)
3 ZIP codes · 3 water systems · Updated 2026-06-03
Moraga, CA: water systems collectively below average — violations documented.
How Moraga Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Moraga Residents
- Your city's water systems recorded 54 violations in the past 5 years.
- Average lead level: 0.0065 mg/L.
- Estimated remediation: $1,567 per household.
- CDC health risk index: 10.92.
Moraga's Water Providers
Across Moraga, CA, residential water comes from 3 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 3 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 3 ZIP codes in Moraga, California (population ~16,927), covering 3 community water systems serving approximately 1,442,985 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. 42 health-based violations documented.
Home Safety Score
Average Home Safety Score for Moraga: D (52/100)
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
Moraga water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0065 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): 1 ZIP code
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Barium | Inorganic | 48 | 3 |
| Stage 2 DBP Rule | Treatment Technique | 16 | 3 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 3 |
| Consumer Confidence Report Rule | Reporting | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 94556 | C | 18 | 14 | EAST BAY MUD |
| 94570 | D | 18 | 14 | Bella Vista Water Sys |
| 94575 | D | 18 | 14 | EAST BAY MUD |
All ZIP Codes in Moraga
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.
Moraga 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
What's in Moraga's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Moraga
Equity impact data for Moraga lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Moraga are relatively low compared to home values. The $667–$3,167 estimated range is a small fraction of median property value. Home values are 116% above the California average.
Moraga: Lead Risk & Vulnerable Populations
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 Moraga 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.
Moraga: Flood History & Water Damage Risk
How does Moraga's flood record connect to local water quality? The NFIP documents 10 claims — enough to signal recurring events — and 33% 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.
Moraga has a moderate flood history with 10 FEMA claims averaging $1,738 per payout. 33% 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>$1,567</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 Moraga
- 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. Filters rated for Barium can reduce the most common contaminant found in Moraga's water.
- 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 Moraga, CA