Alpine County, California
5 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-03
Within Alpine County, 5 tracked ZIP codes reveal moderate water quality — national standards are generally met, with some documented exceptions.
How Alpine County Compares
How Alpine County Compares
Alpine County scores 11 points below the California state average (73/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Alpine County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.3 (asthma 10%, diabetes 11.3%)
Estimated additional annual cost per homeowner: $1,268, driven primarily by wildfire
Infrastructure: 0.375% avg pipe failure probability, 50% of ZIPs at high risk
71.5% of homes built before 1978 (lead paint era)
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: $1,268
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,986 housing units in Alpine 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 Alpine County
Remediation costs are relatively manageable for most homeowners in Alpine 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 Alpine County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 3 systems in Alpine County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | KIRKWOOD MEADOWS PUBLIC UTILITY DISTRICT | 7,851 | 1 |
| 2 | SOUTH TAHOE PUD - MAIN | 100,000 | 0 |
| 3 | Markleeville Water Company | 175 | 0 |
All ZIP Codes in Alpine County
5 ZIP codes tracked in Alpine County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 95646 | Kirkwood | 83 | B | 1 | $568K |
| 2 | 96120 | Markleeville | 68 | C | 0 | $481K |
| 3 | 95644 | Kit Carson | 53 | D | 0 | — |
| 4 | 95721 | Echo Lake | 53 | D | 0 | — |
| 5 | 95735 | Twin Bridges | 53 | D | 0 | $538K |
Recommended Buyer Guides for Alpine County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 71.5% of homes built before 1978
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Alpine County, California
Overview
Alpine County in California covers 5 ZIP codes with an average Home Safety Score of C (62/100).
1 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← 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.