Lewis County, Tennessee
1 ZIP code · Avg score 68/100 · Grade C · Updated 2026-06-03
Safe water is the norm for most of Lewis County's 1 ZIP code — but a notable subset have documented violations that push the grade to the middle tier.
How Lewis County Compares
How Lewis County Compares
Lewis County scores 1 points below the Tennessee state average (69/100) and 0 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 16.1 (asthma 11.2%, diabetes 14.9%)
Estimated additional annual cost per homeowner: $470, driven primarily by energy_code_gap
Infrastructure: 0.24% avg pipe failure probability
41% 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: $470
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,572 housing units in Lewis 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 Lewis County
Remediation costs are relatively manageable for most homeowners in Lewis 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 Lewis 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 Lewis County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Summertown Utility District | 5,593 | 2 |
| 2 | LAWRENCEBURG UTILITY SYSTEMS | 21,244 | 2 |
| 3 | Hohenwald Water System | 12,475 | 2 |
| 4 | Fairview Utility District | 6,787 | 2 |
| 5 | Northeast Lawrence U.d. | 4,017 | 2 |
7 total water systems serve Lewis County.
All ZIP Codes in Lewis County
1 ZIP code tracked in Lewis County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 38483 | Summertown | 68 | C | 2 | $206K |
Recommended Buyer Guides for Lewis County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Overview
Lewis County in Tennessee covers 1 ZIP code with an average Home Safety Score of C (68/100).
1 of 1 ZIP code have recorded EPA violations. All violations are monitoring/reporting type.
← 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.