COUNTY REPORT TN

DeKalb County, Tennessee

3 ZIP codes · Avg score 73/100 · Grade B

ZipCheckup grade for DeKalb County: B.

This ZIP has a few items worth a quick check.

Residents of DeKalb County can read the A-B grade as a starting point and then open their own ZIP report, one of 3 on this site.

How DeKalb County Compares

DeKalb County73/100
Tennessee avg72/100
National avg73/100

How DeKalb County Compares

B
County Grade
73/100
Avg Safety Score
3
ZIP Codes
9
Water Systems

DeKalb County scores 1 points above the Tennessee state average (72/100) and 0 points above the national average (73/100).

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

B
County Grade
73
Avg Safety Score
3
ZIP Codes
Best ZIP: 37166 (73/100)
Lowest ZIP: 37166 (73/100)
$223K
Median Home Value
$400
Avg Remediation (0.18% of home value)

Key Risk Factors

Health risk index: 16.6 (asthma 11.1%, diabetes 15.9%)

Modeled additional annual cost estimate per homeowner: $460, largest modeled factor: Flood

47% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 11.1% (national: 8.9%)
Diabetes 15.9% (national: 10.5%)
Obesity 40.4% (national: 32.4%)

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

Infrastructure Overview

1988
Median Build Year
47%
Pre-1980 Housing
33/100
Infrastructure Stress Indicator
0%
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: $460

Flood $600/yr
Energy Code Gap $210/yr
Water / Lead $50/yr

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

Housing Age Distribution

7,643 housing units in DeKalb County

Pre-1940 3%
1940–1959 9%
1960–1979 35%
1980–1999 27%
2000+ 26%

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 DeKalb County

$223K
Median Home Value
$400
Est. Remediation Cost
0.2%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in DeKalb 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 DeKalb County residents

Asthma 11.1% (US avg: 8.9%)
Diabetes 15.9% (US avg: 11%)
Obesity 40.4% (US avg: 32.4%)

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

Water systems mapped to DeKalb County ZIP codes

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

Show all 8 water systems

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

Systems with the most violations in DeKalb County

5 water systems with violations in EPA records.

All ZIP Codes in DeKalb County

3 ZIP codes tracked in DeKalb County.

# ZIP Code City Safety Score Grade Violations Home Value
1 37166 Smithville 73 B 17 (2 health) $184K
2 37059 Dowelltown — — 81 (3 health) $223K
3 38569 Lancaster — — 46 (2 health) $335K

Recommended Buyer Guides for DeKalb 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.

Overview

DeKalb County in Tennessee covers 3 tracked ZIP records with an average Home Safety Score of B (73/100) across 1 scored records.

3 of 3 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 5 health-based violations appear in the available health breakdown.

← Back to Tennessee Home Safety Profile

Data Sources

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

Frequently Asked Questions

Is water safe in DeKalb County?
DeKalb County receives an average Home Safety grade of B from its scored ZIP records (3 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve DeKalb County?
We map 9 public water systems to 3 ZIP codes in our data for DeKalb County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in DeKalb County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in DeKalb County is flood. Across all modeled risk factors, the estimated average additional annual cost is $460 per homeowner; actual costs vary by home.
How old are homes in DeKalb County?
The median home build year in DeKalb County is 1988. 47% 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 DeKalb County compare to Tennessee?
DeKalb County has an average Home Safety Score of 73/100 under model 4.0.0, which is at or above the Tennessee state average of 72/100.

How to cite this page

APA ZipCheckup. (2026). DeKalb County, TN: HSS 73/100; PFAS Found in Water. https://zipcheckup.com/county/tennessee/dekalb/
BibTeX
@misc{zipcheckup-county-tennessee-dekalb,
  author = {{ZipCheckup}},
  title  = {{DeKalb County, TN: HSS 73/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/tennessee/dekalb/}
}

Page version: October 2026.

Get safety alerts for DeKalb, Tennessee

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.