Union County, Oregon
7 ZIP codes · Avg score 78/100 · Grade B · Updated 2026-06-03
Water systems in Union County serve 7 ZIP codes with few reported safety events.
How Union County Compares
How Union County Compares
Union County scores 0 points above the Oregon state average (78/100) and 10 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Union County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 12.2%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $1,334, driven primarily by energy_code_gap
Infrastructure: 0.367% avg pipe failure probability, 14% of ZIPs at high risk
70% 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: $1,334
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,720 housing units in Union 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 Union County
Remediation costs are relatively manageable for most homeowners in Union 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 Union 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 Union County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of La Grande, | 13,460 | 7 |
| 2 | Sundowner Mobile Home Park | 160 | 7 |
| 3 | Flying K Trailer Ranch | 96 | 7 |
| 4 | City of Union, | 2,162 | 2 |
| 5 | Elgin Water Department | 1,717 | 1 |
8 total water systems serve Union County.
All ZIP Codes in Union County
7 ZIP codes tracked in Union County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97824 | Cove | 83 | B | 0 | $363K |
| 2 | 97827 | Elgin | 83 | B | 1 | $233K |
| 3 | 97841 | Imbler | 83 | B | 1 | $274K |
| 4 | 97867 | North Powder | 83 | B | 0 | $149K |
| 5 | 97883 | Union | 82 | B | 2 | $225K |
| 6 | 97850 | La Grande | 80 | B | 7 | $265K |
| 7 | 97876 | Summerville | 53 | D | 0 | $434K |
Recommended Buyer Guides for Union 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 — 70% of homes built before 1978
Deep Dive Reports
Detailed analysis for Union County, Oregon
Overview
Union County in Oregon covers 7 ZIP codes with an average Home Safety Score of B (78/100).
4 of 7 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.