El Dorado Hills, CA Water Safety: 75/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Across El Dorado Hills, 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 El Dorado Hills Compares
Data: EPA SDWIS Last verified: 2026-06-03
El Dorado Hills Water: The Quick Version
- Homes built before 1986: 18% — older plumbing may contain lead solder.
- Estimated remediation: $1,700 per household.
- CDC health risk index: 11.85.
Water Systems Serving El Dorado Hills
Residential water service in El Dorado 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 1 ZIP code in El Dorado Hills, California (population ~47,262), covering 2 community water systems serving approximately 132,349 people region-wide.
No EPA violations recorded across any ZIP codes in El Dorado Hills — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for El Dorado Hills: B (75/100)
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
El Dorado Hills water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for El Dorado Hills
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95762 | B | EL DORADO ID - MAIN | 132,171 |
All ZIP Codes in El Dorado Hills
- 95762 [B]
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 El Dorado Hills
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 Old Is El Dorado Hills's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead exposure in tap water isn't just a function of what water utilities deliver — it's also shaped by the plumbing inside individual homes. Structures built before 1986 may contain lead-soldered copper joints, and homes built before 1970 face an additional risk from lead pipes themselves. El Dorado Hills's median build year of 2008 suggests the housing stock is broadly weighted toward the safer post-1986 era, but the age distribution shown above makes clear that the pre-1986 share of the inventory still represents a meaningful fraction worth understanding for anyone in an older home.
Most homes in El Dorado Hills were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
El Dorado Hills: Remediation Cost in Perspective
In El Dorado Hills, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in El Dorado Hills are relatively low compared to home values. The $1,100–$2,600 estimated range is a small fraction of median property value. Home values are 19% above the California average.
Protecting Children from Lead in El Dorado Hills
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.
Reading aggregate data alone gives a clean picture for El Dorado Hills — system samples below the federal action mark and 18% pre-rule housing — yet that math averages many service connections. A one-tap draw gives the only direct read for a specific home.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for El Dorado Hills
El Dorado Hills's flood exposure sits in the moderate range: 7 NFIP claims on record and 100% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
El Dorado Hills has a moderate flood history with 7 FEMA claims averaging $9,084 per payout. 100% 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>$1,700</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 El Dorado Hills, CA