Decatur County, Tennessee
5 ZIP codes · Avg score 71/100 · Grade B · Updated 2026-06-03
Although county size varies, Decatur County's 5 ZIP codes share reliably safe tap water records and above-average compliance scores.
How Decatur County Compares
How Decatur County Compares
Decatur County scores 2 points above the Tennessee state average (69/100) and 3 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Decatur County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 17.6 (asthma 11.4%, diabetes 17.3%)
Estimated additional annual cost per homeowner: $704, driven primarily by energy_code_gap
Infrastructure: 0.282% avg pipe failure probability
49.2% 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: $704
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,839 housing units in Decatur 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 Decatur County
Remediation costs are relatively manageable for most homeowners in Decatur 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 Decatur 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 Decatur County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | North U.dep. of Decatur/benton Company | 3,818 | 16 |
| 2 | LEXINGTON WATER SYSTEMS | 26,322 | 11 |
| 3 | Perryville Utility District | 3,127 | 11 |
| 4 | Woodlawn Shores Water Department | 635 | 9 |
| 5 | PARSONS WATER DEPARTMENT | 4,303 | 7 |
9 total water systems serve Decatur County.
All ZIP Codes in Decatur County
5 ZIP codes tracked in Decatur County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 38374 | Scotts Hill | 83 | B | 1 | $148K |
| 2 | 38380 | Sugar Tree | 76 | B | 9 | $144K |
| 3 | 38329 | Decaturville | 72 | B | 3 | $141K |
| 4 | 38363 | Parsons | 71 | B | 7 | $106K |
| 5 | 38328 | Darden | 53 | D | 0 | $142K |
Recommended Buyer Guides for Decatur County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for Decatur County, Tennessee
Overview
Decatur County in Tennessee covers 5 ZIP codes with an average Home Safety Score of B (71/100).
4 of 5 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.