Union County, Tennessee
6 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-03
Across Union County's 6 ZIP codes, water safety results are uneven — a portion of systems carry active or recent violations, while others meet standards without issues.
How Union County Compares
How Union County Compares
Union County scores 14 points below the Tennessee state average (69/100) and 13 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Union County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.2 (asthma 11.1%, diabetes 15%)
Estimated additional annual cost per homeowner: $447, driven primarily by energy_code_gap
Infrastructure: 0.273% avg pipe failure probability
41.7% 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: $447
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,671 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 | Hallsdale-powell U.d. | 84,315 | 14 |
| 2 | LUTTRELL-BLAINE-CORRYTON U.D. | 10,529 | 11 |
| 3 | Maynardville Water Department | 7,940 | 11 |
| 4 | Old Hickory Wat Company-union County | 342 | 11 |
| 5 | Leadmine Bend Water Assoc. | 120 | 3 |
8 total water systems serve Union County.
All ZIP Codes in Union County
6 ZIP codes tracked in Union County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37779 | Luttrell | 70 | B | 0 | $161K |
| 2 | 37807 | Maynardville | 65 | C | 11 (1 health) | $185K |
| 3 | 37866 | Sharps Chapel | 63 | C | 3 | $278K |
| 4 | 37870 | Speedwell | 53 | D | 0 | $145K |
| 5 | 37709 | Blaine | 40 | D | 0 | $239K |
| 6 | 37848 | Powder Springs | 40 | D | 0 | — |
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 Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Union County, Tennessee
Overview
Union County in Tennessee covers 6 ZIP codes with an average Home Safety Score of C (55/100).
2 of 6 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← Back to Tennessee 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.