Skamania County, Washington
5 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
Across Skamania County's 5 ZIP codes, water safety results are uneven — a portion of systems carry active or recent violations, while others meet standards without issues.
How Skamania County Compares
How Skamania County Compares
Skamania County scores 17 points below the Washington state average (78/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Skamania County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.1 (asthma 11.5%, diabetes 11.2%)
Estimated additional annual cost per homeowner: $1,178, driven primarily by flood
Infrastructure: 0.314% avg pipe failure probability
52.2% 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: $1,178
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
13,087 housing units in Skamania 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 Skamania County
Remediation costs are relatively manageable for most homeowners in Skamania 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 Skamania 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 Skamania County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Underwood | 1,000 | 18 |
| 2 | Carson | 3,015 | 16 |
| 3 | Stevenson Water Department | 2,594 | 16 |
| 4 | Wind River Community | 44 | 10 |
| 5 | Home Valley Water District | 500 | 8 |
13 total water systems serve Skamania County.
All ZIP Codes in Skamania County
5 ZIP codes tracked in Skamania County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 98639 | North Bonneville | 70 | B | 0 | $379K |
| 2 | 98605 | Bingen | 65 | C | 2 | $319K |
| 3 | 98671 | Washougal | 65 | C | 0 | $532K |
| 4 | 98610 | Carson | 61 | C | 10 | $391K |
| 5 | 98648 | Stevenson | 42 | D | 6 | $477K |
Recommended Buyer Guides for Skamania County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 52.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
Deep Dive Reports
Detailed analysis for Skamania County, Washington
Overview
Skamania County in Washington covers 5 ZIP codes with an average Home Safety Score of C (61/100).
3 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Washington 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.