Humphreys County, Tennessee
4 ZIP codes · Avg score 53/100 · Grade D · Updated 2026-06-04
State safety rankings put Humphreys County near the bottom — 4 ZIP codes, below-average compliance.
How Humphreys County Compares
How Humphreys County Compares
Humphreys County scores 16 points below the Tennessee state average (69/100) and 15 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 16.5 (asthma 11.1%, diabetes 15.5%)
Estimated additional annual cost per homeowner: $1,423, driven primarily by flood
Infrastructure: 0.31% avg pipe failure probability
58.5% 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: $1,423
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,931 housing units in Humphreys 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 Humphreys County
Remediation costs are relatively manageable for most homeowners in Humphreys 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 Humphreys 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 Humphreys County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | WAVERLY WATER DEPARTMENT | 9,270 | 6 |
| 2 | New Johnsonville Water Department | 2,961 | 4 |
| 3 | BON AQUA-LYLES U.D. | 12,701 | 0 |
| 4 | Centerville Water System | 11,011 | 0 |
| 5 | Erin Water Department | 8,239 | 0 |
6 total water systems serve Humphreys County.
All ZIP Codes in Humphreys County
4 ZIP codes tracked in Humphreys County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37134 | New Johnsonville | 64 | C | 4 | $142K |
| 2 | 37185 | Waverly | 54 | D | 2 | $182K |
| 3 | 37101 | Mc Ewen | 53 | D | 0 | $209K |
| 4 | 38333 | Eva | 40 | D | 0 | — |
Recommended Buyer Guides for Humphreys County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 58.5% of homes built before 1978
- 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
Overview
Humphreys County in Tennessee covers 4 ZIP codes with an average Home Safety Score of D (53/100).
2 of 4 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.
What You Can Do
Humphreys County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
58.5% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.