Moreno Valley, CA Water Safety: 83/100 (2026)
7 ZIP codes · 6 water systems · Updated 2026-06-03
Across Moreno Valley, EPA monitoring data shows low violation rates and healthy safety margins — a pattern that places the city well above CA's average for drinking water compliance across recent reporting cycles.
How Moreno Valley Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Moreno Valley, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Moreno Valley's 7 ZIP codes.
Key Facts for Moreno Valley Residents
- Average lead level: 0.0012 mg/L.
- Estimated remediation: $1,371 per household.
- CDC health risk index: 12.09 — above typical levels.
Moreno Valley's Water Providers
Moreno Valley, CA is covered by 3 major water utilities out of 6 federally tracked systems, each managing its own pipes, treatment processes, and EPA filings. What a household gets from the tap depends on which provider's system serves that address.
Overview
We track water quality and home safety data for 7 ZIP codes in Moreno Valley, California (population ~210,879), covering 6 community water systems serving approximately 1,141,452 people region-wide.
No EPA violations recorded across any ZIP codes in Moreno Valley — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Moreno Valley: B (83/100)
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
Moreno Valley water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0012 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): 7 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 |
|---|---|---|---|
| 92551 | B | Eastern Municipal Water District | 666,581 |
| 92552 | B | Box Springs Mutual Wc | 3,382 |
| 92553 | B | Box Springs Mutual Wc | 3,382 |
| 92554 | B | Box Springs Mutual Wc | 3,382 |
| 92555 | B | Eastern Municipal Water District | 666,581 |
| 92556 | B | Box Springs Mutual Wc | 3,382 |
| 92557 | B | Eastern Municipal Water District | 666,581 |
All ZIP Codes in Moreno 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.
Moreno Valley 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 Moreno Valley
While no remediation project is entirely without cost, the relationship between estimated remediation and property values in Moreno Valley is notably favorable — the equity share is small enough that the household financial perspective is one of proportionality rather than pressure, and most homeowners can treat it as routine planning rather than a significant financial event.
Remediation costs in Moreno Valley are relatively low compared to home values. The $629–$2,286 estimated range is a small fraction of median property value. Home values are 36% below the California average.
Moreno Valley: 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 Moreno Valley 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.
Moreno Valley: Flood History & Water Damage Risk
Over the multi-decade window covered by the National Flood Insurance Program, Moreno Valley has accumulated 16 claims — a total that suggests more than isolated flood exposure. With 57% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Moreno Valley has a moderate flood history with 16 FEMA claims averaging $6,228 per payout. 57% 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>$1,371</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 Moreno Valley, CA