Sherman County, Oregon
4 ZIP codes · Avg score 79/100 · Grade B · Updated 2026-06-03
EPA monitoring reports for Sherman County cover 4 ZIP codes and tell a largely reassuring story — compliance rates are high and health-based violations are far below the national norm.
How Sherman County Compares
How Sherman County Compares
Sherman County scores 1 points above the Oregon state average (78/100) and 11 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 15.3 (asthma 12.2%, diabetes 14.2%)
Estimated additional annual cost per homeowner: $1,103, driven primarily by energy_code_gap
Infrastructure: 0.407% avg pipe failure probability, 50% of ZIPs at high risk
78.5% 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: $1,103
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
891 housing units in Sherman 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 Sherman County
Remediation costs are relatively manageable for most homeowners in Sherman 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 Sherman County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Sherman County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Rufus Public Works | 270 | 7 |
| 2 | City of Wasco, | 460 | 2 |
| 3 | Grass Valley Water System | 184 | 1 |
| 4 | City of Moro, | 350 | 1 |
All ZIP Codes in Sherman County
4 ZIP codes tracked in Sherman County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97029 | Grass Valley | 83 | B | 1 | — |
| 2 | 97039 | Moro | 83 | B | 1 | $246K |
| 3 | 97065 | Wasco | 82 | B | 2 | $203K |
| 4 | 97050 | Rufus | 67 | C | 7 | $173K |
Recommended Buyer Guides for Sherman County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 78.5% of homes built before 1978
Overview
Sherman County in Oregon covers 4 ZIP codes with an average Home Safety Score of B (79/100).
4 of 4 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.