Marshall County, Tennessee
6 ZIP codes · Avg score 57/100 · Grade C · Updated 2026-06-03
For most households in Marshall County, the 6 tracked ZIP codes show adequate but uneven water quality.
How Marshall County Compares
How Marshall County Compares
Marshall County scores 12 points below the Tennessee state average (69/100) and 11 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Marshall County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 11%, diabetes 13.1%)
Estimated additional annual cost per homeowner: $853, driven primarily by flood
Infrastructure: 0.257% avg pipe failure probability
44% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Marshall County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 18 violations. Past 5 years: 35 total (23 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $853
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
17,012 housing units in Marshall 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 Marshall County
Remediation costs are relatively manageable for most homeowners in Marshall 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 Marshall 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 Marshall County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Marshall Company B.p.u. #1 | 13,257 | 2 |
| 2 | Chapel Hill Water System | 3,426 | 2 |
| 3 | Maury Company Water System | 24,488 | 2 |
| 4 | Bedford County U.d. | 22,908 | 2 |
| 5 | LEWISBURG WATER SYSTEM | 24,569 | 0 |
11 total water systems serve Marshall County.
All ZIP Codes in Marshall County
6 ZIP codes tracked in Marshall County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37091 | Lewisburg | 65 | C | 0 | $231K |
| 2 | 37034 | Chapel Hill | 64 | C | 2 | $306K |
| 3 | 37019 | Belfast | 53 | D | 0 | $257K |
| 4 | 37047 | Cornersville | 53 | D | 0 | $237K |
| 5 | 37060 | Eagleville | 53 | D | 0 | $415K |
| 6 | 37180 | Unionville | 53 | D | 0 | $274K |
Recommended Buyer Guides for Marshall 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
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Marshall County, Tennessee
Overview
Marshall County in Tennessee covers 6 ZIP codes with an average Home Safety Score of C (57/100).
1 of 6 ZIP codes 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.