COUNTY REPORT TN

Loudon County, Tennessee

Name: Home Safety Data for Loudon County, Tennessee
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

5 ZIP codes · Avg score 55/100 · Grade C

ZipCheckup grade for Loudon County: C.

A mixed picture - some signals here are worth your attention.

Within Loudon County, 5 tracked ZIP codes add up to a middle-tier grade, with water records that should be checked system by system.

How Loudon County Compares

Loudon County55/100

Tennessee avg72/100

National avg73/100

How Loudon County Compares

County Grade

55/100

Avg Safety Score

ZIP Codes

Water Systems

Loudon County scores 17 points below the Tennessee state average (72/100) and 18 points below the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

County Grade

Avg Safety Score

ZIP Codes

Philadelphia

Best ZIP: 37846 (63/100)

Lenoir City

Lowest ZIP: 37771 (45/100)

$270K

Median Home Value

$640

Avg Remediation (0.24% of home value)

ZIP Code Risk Map

Water Quality Map: Loudon County, Tennessee

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 15.5 (asthma 10.3%, diabetes 15.1%)

Modeled additional annual cost estimate per homeowner: $860, largest modeled factor: Flood

36% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10.3% (national: 8.9%)

Diabetes 15.1% (national: 10.5%)

Obesity 36.4% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1996

Median Build Year

36%

Pre-1980 Housing

31/100

Infrastructure Stress Indicator

ZIPs with High Infrastructure Stress

Moderate

Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $860

Flood $700/yr

Energy Code Gap $270/yr

Water / Lead $30/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

27,661 housing units in Loudon County

Pre-1940 7%

1940–1959 11%

1960–1979 18%

1980–1999 30%

2000+ 34%

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

$270K

Median Home Value

$640

Est. Remediation Cost

0.2%

of Home Value

Remediation as % of home value low burden

Modeled remediation costs in Loudon County can be compared with the median property value; actual costs vary by property.

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

Asthma 10.3% (US avg: 8.9%)

Diabetes 15.1% (US avg: 11%)

Obesity 36.4% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Loudon County ZIP codes

8 community water systems mapped to Loudon County ZIP codes; EPA may list more systems serving the county.

First U.d. of Knox County
Serves ~115,531 people

D
South Blount Utility District
Serves ~53,864 people 2 violations

D
Lenoir City Utility Board
Serves ~34,786 people 2 violations

C
Loudon Utilities Board
Serves ~16,047 people 2 violations

C
Watts Bar Utility District
Serves ~15,571 people

C
Tellico Area Services System
Serves ~14,836 people 1 violation

C

Show all 8 water systems

Tellico Village P.o.a.
Serves ~13,870 people 1 violation

C
Sweetwater Utility Board
Serves ~13,597 people 2 violations

C

12 water systems mapped to Loudon County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Loudon County

5 water systems with violations in EPA records.

Friendsville Water Works
Serves ~5,437 people 5 violations

C
Niota Water System
Serves ~3,932 people 3 violations

C
South Blount Utility District
Serves ~53,864 people 2 violations

D
Lenoir City Utility Board
Serves ~34,786 people 2 violations

C
Loudon Utilities Board
Serves ~16,047 people 2 violations

C

All ZIP Codes in Loudon County

5 ZIP codes tracked in Loudon County.

#	ZIP Code	City	Safety Score	Grade	Violations	Home Value
1	37846	Philadelphia	63	C	8	$200K
2	37742	Greenback	62	C	8 (1 health)	$270K
3	37774	Loudon	60	C	9 (1 health)	$330K
4	37772	Lenoir City	47	D	5 (1 health)	$367K
5	37771	Lenoir City	45	D	7 (1 health)	$237K

Recommended Buyer Guides for Loudon County

Nothing on this list means a problem exists in your own home: the matches are drawn from county- and ZIP-level records, so a guide shows up because of an area signal, and only testing at your tap describes a specific household.

Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
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

Deep Dive Reports

Detailed analysis for Loudon County, Tennessee

💧

Water Quality

EPA violations, contaminant trends, and enforcement actions across the county

🏠

Home Affordability

Remediation costs vs. home values, equity trap analysis by ZIP

$640 avg remediation

Overview

Loudon County in Tennessee covers 5 tracked ZIP records with an average Home Safety Score of C (55/100) across 5 scored records.

5 of 5 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 2 health-based violations appear in the available health breakdown.

← Back to Tennessee Home Safety Profile

Data Sources

Water quality: EPA Safe Drinking Water Information System (SDWIS)
PFAS screening: EPA UCMR 5
Radon zones: EPA Map of Radon Zones
Air quality: EPA AirData annual AQI
Home values: U.S. Census Bureau ACS (median estimates by ZCTA)

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Loudon County?

Loudon County receives a grade of C. Some ZIP codes have recorded violations and residents in affected areas may want to test their water.

How many water systems serve Loudon County?

We map 12 public water systems to 5 ZIP codes in our data for Loudon County. EPA may list more systems serving the county, so this is not a full count.

What is the biggest environmental risk in Loudon County?

In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Loudon County is flood. Across all modeled risk factors, the estimated average additional annual cost is $860 per homeowner; actual costs vary by home.

How old are homes in Loudon County?

The median home build year in Loudon County is 1996. 36% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.

How does Loudon County compare to Tennessee?

Loudon County has an average Home Safety Score of 55/100 under model 4.0.0, which is below the Tennessee state average of 72/100.

Explore More

Flood Risk Rankings 2026 Lead Risk Rankings 2026 Water Safety Rankings 2026 Home Safety Rankings 2026 Water Filter Matcher Find the right filter for your water Home Safety Score Full safety breakdown by ZIP

Tennessee State Overview →