El Dorado County, California
24 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-06-04
El Dorado County's tap water quality puts it in the upper tier nationally; the 24 ZIP codes here record few health-based violations.
How El Dorado County Compares
How El Dorado County Compares
El Dorado County scores 3 points below the California state average (73/100) and 2 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: El Dorado County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.8 (asthma 9.8%, diabetes 10.8%)
Estimated additional annual cost per homeowner: $1,924, driven primarily by wildfire
Infrastructure: 0.343% avg pipe failure probability, 13% of ZIPs at high risk
62.4% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across El Dorado County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 9 violations. Past 5 years: 18 total (18 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,924
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
78,696 housing units in El Dorado County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in El Dorado County
Remediation costs are relatively manageable for most homeowners in El Dorado County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for El Dorado County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in El Dorado County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | South Tahoe Pud - Main | 100,000 | 32 |
| 2 | Lukins Brothers Water Company | 3,277 | 32 |
| 3 | Lakeside Park Association | 2,648 | 32 |
| 4 | Tahoe Keys Water Company | 1,420 | 32 |
| 5 | Sierra Pines Mobile Home Park | 70 | 32 |
23 total water systems serve El Dorado County.
All ZIP Codes in El Dorado County
24 ZIP codes tracked in El Dorado County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95636 | Grizzly Flats | 82 | B | 2 | $369K |
| 2 | 95634 | Georgetown | 81 | B | 5 | $332K |
| 3 | 95672 | Rescue | 80 | B | 1 | $708K |
| 4 | 96151 | South Lake Tahoe | 80 | B | 4 | — |
| 5 | 96152 | South Lake Tahoe | 80 | B | 4 | — |
| 6 | 96154 | South Lake Tahoe | 80 | B | 4 | — |
| 7 | 96155 | South Lake Tahoe | 80 | B | 4 | — |
| 8 | 96156 | South Lake Tahoe | 80 | B | 4 | — |
| 9 | 96157 | South Lake Tahoe | 80 | B | 4 | — |
| 10 | 96158 | South Lake Tahoe | 80 | B | 4 | — |
| 11 | 95667 | Placerville | 78 | B | 0 | $528K |
| 12 | 95762 | El Dorado Hills | 75 | B | 0 | $882K |
| 13 | 95629 | Fiddletown | 71 | B | 3 (1 health) | $473K |
| 14 | 96150 | South Lake Tahoe | 70 | B | 4 | $649K |
| 15 | 95619 | Diamond Springs | 63 | C | 0 | $349K |
| 16 | 95709 | Camino | 63 | C | 0 | $585K |
| 17 | 95726 | Pollock Pines | 63 | C | 0 | $401K |
| 18 | 96142 | Tahoma | 63 | C | 0 | $799K |
| 19 | 95684 | Somerset | 61 | C | 0 | $518K |
| 20 | 95613 | Coloma | 55 | C | 0 | — |
| 21 | 95623 | El Dorado | 55 | C | 0 | $571K |
| 22 | 95633 | Garden Valley | 53 | D | 0 | $433K |
| 23 | 95635 | Greenwood | 53 | D | 0 | $476K |
| 24 | 95720 | Kyburz | 50 | D | 10 (8 health) | $601K |
Recommended Buyer Guides for El Dorado County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 62.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for El Dorado County, California
Overview
El Dorado County in California covers 24 ZIP codes with an average Home Safety Score of B (70/100).
13 of 24 ZIP codes have recorded EPA violations. 9 health-based violations have been documented.
← Back to California water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.