Escondido, CA Water Safety: 94/100 (2026)
7 ZIP codes · 15 water systems · Updated 2026-06-03
EPA compliance records for Escondido tell a largely clear story: violation rates are low, health-based exceedances are uncommon, and the city's grade puts it well above average within CA.
How Escondido Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Escondido, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Escondido's 7 ZIP codes.
Key Facts for Escondido Residents
- Average lead level: 0.0011 mg/L.
- Estimated remediation: $1,557 per household.
- CDC health risk index: 10.18.
Escondido's Water Providers
In Escondido, CA, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 15 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 7 ZIP codes in Escondido, California (population ~178,615), covering 15 community water systems serving approximately 2,031,034 people region-wide.
No EPA violations recorded across any ZIP codes in Escondido — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Escondido: A (94/100)
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
Escondido water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0011 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 7 ZIP codes
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92025 | A | City of Escondido, | 137,044 |
| 92026 | A | City of Escondido, | 137,044 |
| 92027 | A | City of Escondido, | 137,044 |
| 92029 | A | City of Escondido, | 137,044 |
| 92030 | A | City of Escondido, | 137,044 |
| 92033 | A | City of Escondido, | 137,044 |
| 92046 | A | City of Escondido, | 137,044 |
All ZIP Codes in Escondido
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.
Escondido 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 Escondido
Low proportionality — that's the Escondido picture when remediation costs are placed against typical home equity.
Remediation costs in Escondido are relatively low compared to home values. The $757–$2,529 estimated range is a small fraction of median property value. Home values are 4% above the California average.
Escondido: 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 Escondido 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.
Escondido: Flood History & Water Damage Risk
FEMA data shows 57% of Escondido's ZIP codes mapped into designated flood zones, paired with an NFIP record of 85 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Escondido has a moderate flood history with 85 FEMA claims averaging $6,566 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>$1,557</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 Escondido, CA