Loudon County, Tennessee
3 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-07-19
ZipCheckup grade for Loudon: C.
A mixed picture - some signals here are worth your attention.
Spanning 3 ZIP codes, Loudon County lands near the national median for water safety - compliance results are mixed, and the county's middle-grade standing reflects genuine variability rather than a single systemic problem.
How Loudon County Compares
How Loudon County Compares
Loudon County scores 2 points below the Tennessee state average (69/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
Key Risk Factors
Health risk index: 15.5 (asthma 10.3%, diabetes 15.1%)
Estimated additional annual cost per homeowner: $1,187, driven primarily by flood
Infrastructure: 0.303% avg pipe failure probability
43.7% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Loudon County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 2 violations. Past 5 years: 3 total (3 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: $1,187
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
22,935 housing units in Loudon 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 Loudon County
Remediation costs are relatively manageable for most homeowners in Loudon 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 Loudon County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Loudon County
8 community water systems serving Loudon County.
- C
- C
- B
- B
- B
- B
Show all 8 water systems
- B
- B
9 total water systems serve Loudon County.
Systems with the most violations in Loudon County
2 water systems with recorded EPA violations.
- B
- B
All ZIP Codes in Loudon County
3 ZIP codes tracked in Loudon County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37774 | Loudon | 70 | B | 1 | $330K |
| 2 | 37771 | Lenoir City | 65 | C | 1 | $237K |
| 3 | 37772 | Lenoir City | 65 | C | 1 | $367K |
Recommended Buyer Guides for Loudon County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- 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
Loudon County in Tennessee covers 3 ZIP codes with an average Home Safety Score of C (67/100).
3 of 3 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.