Warren County, Tennessee
7 ZIP codes · Avg score 59/100 · Grade C · Updated 2026-06-03
In recent monitoring cycles, Warren County's 7 ZIP codes show a split record — several have documented water safety violations.
How Warren County Compares
How Warren County Compares
Warren County scores 10 points below the Tennessee state average (69/100) and 9 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Warren County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.1 (asthma 11.2%, diabetes 15.3%)
Estimated additional annual cost per homeowner: $646, driven primarily by flood
Infrastructure: 0.358% avg pipe failure probability, 40% of ZIPs at high risk
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Warren County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 24 violations. Past 5 years: 46 total (46 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: $646
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Warren County
Remediation costs are relatively manageable for most homeowners in Warren 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 Warren 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 Warren County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Warren County Utility District | 29,827 | 26 |
| 2 | Mcminnville Water Department | 18,767 | 26 |
| 3 | Warren County Util District #2 | 6,022 | 26 |
| 4 | West Warren-viola U.d. | 19,009 | 14 |
| 5 | WOODBURY WATER SYSTEM | 11,434 | 13 |
10 total water systems serve Warren County.
All ZIP Codes in Warren County
7 ZIP codes tracked in Warren County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37378 | Smartt | 83 | B | 1 | — |
| 2 | 38581 | Rock Island | 63 | C | 0 | $162K |
| 3 | 37111 | Mcminnville | 58 | C | 13 (13 health) | — |
| 4 | 37110 | Mcminnville | 53 | D | 13 (13 health) | $179K |
| 5 | 37382 | Summitville | 53 | D | 0 | — |
| 6 | 37394 | Viola | 53 | D | 0 | $264K |
| 7 | 38550 | Campaign | 53 | D | 0 | — |
Recommended Buyer Guides for Warren County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Warren County, Tennessee
Overview
Warren County in Tennessee covers 7 ZIP codes with an average Home Safety Score of C (59/100).
3 of 7 ZIP codes have recorded EPA violations. 26 health-based violations 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.