Umatilla County, Oregon
13 ZIP codes · Avg score 74/100 · Grade B · Updated 2026-06-03
In recent assessments, Umatilla County's 13 ZIP codes record strong, consistent water safety outcomes.
How Umatilla County Compares
How Umatilla County Compares
Umatilla County scores 4 points below the Oregon state average (78/100) and 6 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Umatilla County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.3 (asthma 12%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $1,368, driven primarily by energy_code_gap
Infrastructure: 0.38% avg pipe failure probability, 46% of ZIPs at high risk
66.8% 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: $1,368
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
31,275 housing units in Umatilla 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 Umatilla County
Remediation costs are relatively manageable for most homeowners in Umatilla 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 Umatilla 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 Umatilla County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Stanfield, | 2,115 | 32 |
| 2 | City of Umatilla, | 8,256 | 29 |
| 3 | City of Hermiston, | 20,000 | 17 |
| 4 | Vista Home Park | 300 | 17 |
| 5 | Chart Subdivision | 125 | 17 |
21 total water systems serve Umatilla County.
All ZIP Codes in Umatilla County
13 ZIP codes tracked in Umatilla County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97880 | Ukiah | 83 | B | 1 | — |
| 2 | 97810 | Adams | 82 | B | 2 | $262K |
| 3 | 97835 | Helix | 82 | B | 10 (1 health) | $236K |
| 4 | 97886 | Weston | 82 | B | 3 | $236K |
| 5 | 97826 | Echo | 80 | B | 4 | $410K |
| 6 | 97813 | Athena | 79 | B | 2 | $217K |
| 7 | 97838 | Hermiston | 75 | B | 17 | $274K |
| 8 | 97801 | Pendleton | 74 | B | 6 | $278K |
| 9 | 97868 | Pilot Rock | 74 | B | 3 | $190K |
| 10 | 97875 | Stanfield | 70 | B | 11 | $204K |
| 11 | 97882 | Umatilla | 69 | C | 12 | $192K |
| 12 | 97862 | Milton Freewater | 55 | C | 0 | $225K |
| 13 | 97859 | Meacham | 53 | D | 0 | $250K |
Recommended Buyer Guides for Umatilla County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 66.8% of homes built before 1978
Deep Dive Reports
Detailed analysis for Umatilla County, Oregon
Overview
Umatilla County in Oregon covers 13 ZIP codes with an average Home Safety Score of B (74/100).
11 of 13 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← 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.