Wallowa County, Oregon
5 ZIP codes · Avg score 85/100 · Grade A · Updated 2026-07-16
ZipCheckup grade for Wallowa: A.
No federal data flags a major home-safety concern for this ZIP.
Water systems in Wallowa County serve 5 ZIP codes with few reported safety events.
How Wallowa County Compares
How Wallowa County Compares
Wallowa County scores 7 points above the Oregon state average (78/100) and 17 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-16
ZIP Code Risk Map
Water Quality Map: Wallowa County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14 (asthma 11.7%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $1,336, driven primarily by energy_code_gap
Infrastructure: 0.386% avg pipe failure probability, 20% of ZIPs at high risk
63% 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: $1,336
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,313 housing units in Wallowa 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 Wallowa County
Remediation costs are relatively manageable for most homeowners in Wallowa 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 Wallowa County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Wallowa County
6 community water systems serving Wallowa County.
- B
- A
- A
- B
- B
- B
Systems with the most violations in Wallowa County
4 water systems with recorded EPA violations.
- B
- B
- A
- A
All ZIP Codes in Wallowa County
5 ZIP codes tracked in Wallowa County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97846 | Joseph | 97 | A | 4 | $373K |
| 2 | 97885 | Wallowa | 88 | A | 4 | $359K |
| 3 | 97857 | Lostine | 84 | B | 13 | $536K |
| 4 | 97828 | Enterprise | 81 | B | 21 | $370K |
| 5 | 97842 | Imnaha | 73 | B | 0 | $292K |
Recommended Buyer Guides for Wallowa 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 — 63% of homes built before 1978
Deep Dive Reports
Detailed analysis for Wallowa County, Oregon
Overview
Wallowa County in Oregon covers 5 ZIP codes with an average Home Safety Score of A (85/100).
4 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Oregon 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.