McNairy County, Tennessee
10 ZIP codes · Avg score 62/100 · Grade C · Updated 2026-06-04
The systems supplying McNairy County's 10 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How McNairy County Compares
How McNairy County Compares
McNairy County scores 7 points below the Tennessee state average (69/100) and 6 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: McNairy County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.9 (asthma 11.4%, diabetes 16.5%)
Estimated additional annual cost per homeowner: $654, driven primarily by flood
Infrastructure: 0.257% avg pipe failure probability
48.6% 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: $654
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
10,636 housing units in McNairy 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 McNairy County
Remediation costs are relatively manageable for most homeowners in McNairy 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 McNairy 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 McNairy County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | SELMER WATER SYSTEM | 20,648 | 7 |
| 2 | Bethel Springs Water System | 944 | 6 |
| 3 | MICHIE WATER DEPT | 2,825 | 5 |
| 4 | Eastview Utility District | 2,134 | 4 |
| 5 | Adamsville Water System | 9,985 | 2 |
7 total water systems serve McNairy County.
All ZIP Codes in McNairy County
10 ZIP codes tracked in McNairy County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 38357 | Michie | 83 | B | 1 | $166K |
| 2 | 38315 | Bethel Springs | 82 | B | 2 | $129K |
| 3 | 38375 | Selmer | 70 | B | 4 | $144K |
| 4 | 38367 | Ramer | 63 | C | 0 | $157K |
| 5 | 38327 | Crump | 55 | C | 0 | $137K |
| 6 | 38361 | Morris Chapel | 55 | C | 0 | $141K |
| 7 | 38339 | Guys | 53 | D | 0 | $121K |
| 8 | 38376 | Shiloh | 53 | D | 0 | — |
| 9 | 38379 | Stantonville | 53 | D | 0 | $169K |
| 10 | 38393 | Chewalla | 53 | D | 0 | — |
Recommended Buyer Guides for McNairy County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this 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 McNairy County, Tennessee
Overview
McNairy County in Tennessee covers 10 ZIP codes with an average Home Safety Score of C (62/100).
3 of 10 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.