CITY REPORT MS HEALTH VIOLATIONS: 4

Horn Lake, MS: 4 Health Violations - Home Safety 92/100

1 ZIP code · 5 water systems · Updated

ZipCheckup grade for Horn Lake: A.

Checked records flag no major concern; missing data is unknown.

Looking at federal compliance records for Horn Lake, MS: the city earns a grade in the top two bands here, and each serving system's violation history can be reviewed individually for what lies behind it.

How Horn Lake Compares

Horn Lake92/100
Mississippi avg89/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
A · 92
Avg Safety Score
Zone 3
County Radon Potential (Low)
$159K
Median Home Value
$600
Est. Remediation (0.4% of home value)

What You Should Know About Horn Lake Water

  • Your city's water systems recorded 23 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0078 mg/L.
  • Homes built before 1986: 40% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 12.99.

Who Supplies Your Water in Horn Lake

Because each listed system has its own federal record, violations at one of the 3 shown below do not apply to the others among the 5 tied to Horn Lake, MS.

Overview

We track home safety data for 1 ZIP code in Horn Lake, Mississippi (population ~26,622), covering 5 community water systems serving approximately 40,455 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 4 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Horn Lake: A (92/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Horn Lake water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0078 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Haloacetic Acids (HAA5) Disinfection Byproducts 16 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 16 1
Groundwater Rule Treatment Technique 6 1
Lead and Copper Rule Revisions Treatment Technique 4 1
Public Notice Rule Reporting 4 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
38637 A 23 4 City of Horn Lake

All ZIP Codes in Horn Lake

  • 38637 [A] - 23 violations ⚠

Data Sources

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

Health Outcomes in Horn Lake

9.7%
Asthma (US: 9.8%)
12.4%
Diabetes (US: 10.4%)
16.4%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.7% ↓
Diabetes 12.4% ↑
Mental Health 16.4% ↑

Vertical line = national average. ■ Above national · ■ Below national

Top Contaminants in Horn Lake Water

Haloacetic Acids (HAA5) 16 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL
Total Trihalomethanes (TTHM) 16 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.08 mg/L
Increased cancer risk with long-term exposure above the MCL
Groundwater Rule 6 violations
Treatment Technique

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in Horn Lake

1999
Median Build Year
40%
Built Before 1986
12%
Built Before 1970
Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

For a household in Horn Lake, a certified lab test of tap water answers what the median build year of 1999 cannot.

1999
Median Year Built
40%
Pre-1986 (lead solder era; lead paint banned 1978)
12%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (12%) 1970–1986 (28%) Post-1986 (60%)

Most homes in Horn Lake were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for Horn Lake Homeowners

Compared with typical property prices, the remediation estimate for Horn Lake is small in percentage terms - at or under one percent.

Median Home Value
$158,900
Est. Remediation
$600
Remediation as % of home value 0.4%

Estimated remediation costs in Horn Lake can be compared with local home values. The $300–$1,500 estimated range can be set against the median property value; actual costs vary by home. Home values are 25% above the Mississippi average.

Lead Exposure Risk for Children in Horn Lake

40%
Homes Built Before 1986
0.0078
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Horn Lake

92
Total FEMA Flood Claims
$21,832
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Horn Lake contains 92 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $21,832. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $600 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Deep Dive Reports

Detailed analysis for Horn Lake, MS

Frequently Asked Questions

What does the Home Safety Score mean for Horn Lake, MS?
Horn Lake has an average Home Safety Score of 92/100 (Grade A) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 23 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Horn Lake?
EPA records list 23 EPA violations, including 4 health-based violations for Horn Lake water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Horn Lake water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Horn Lake is 0.0078 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Horn Lake compare to Mississippi average?
Horn Lake has an average Home Safety Score of 92/100, which is at or above the Mississippi state average of 89/100 for the same model series.
How many water systems serve Horn Lake?
Our records map 5 water systems to 1 ZIP code in Horn Lake. The related population figure in our data is approximately 26,622 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Horn Lake?
Estimated remediation cost per household in Horn Lake: $600; modeled range $300 to $1,500. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Horn Lake, MS: 4 Health Violations - Home Safety 92/100. https://zipcheckup.com/cities/ms/horn-lake/
BibTeX 
@misc{zipcheckup-cities-ms-horn-lake,
  author = {{ZipCheckup}},
  title  = {{Horn Lake, MS: 4 Health Violations - Home Safety 92/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ms/horn-lake/}
}

Page version: October 2026.

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