CITY REPORT KY HEALTH VIOLATIONS: 10

South Williamson, KY: 10 Violations - Home Safety 77/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for South Williamson: B.

This ZIP has a few items worth a quick check.

Your top priority: match a filter's certification to the violations (10 health-based violations). NSF certified filters →

South Williamson, KY: a top-two-band grade.

How South Williamson Compares

South Williamson77/100
Kentucky avg69/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
B · 77
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$167K
Median Home Value
$600
Est. Remediation (0.4% of home value)

What You Should Know About South Williamson Water

  • Your city's water systems recorded 10 violations since 2021.
  • Homes built before 1986: 79% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.

Who Supplies Your Water in South Williamson

Here the list of water systems for South Williamson, KY has a single entry, while the figure of 1 count every system federal data connect to the area's ZIP codes.

Overview

We track home safety data for 1 ZIP code in South Williamson, Kentucky (population ~301), covering 1 community water system serving approximately 44,057 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. 10 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for South Williamson: B (77/100)

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

South Williamson water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (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 2.

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
Total Trihalomethanes (TTHM) Disinfection Byproducts 20 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
41503 B 10 10 Mountain Water District

All ZIP Codes in South Williamson

  • 41503 [B] - 10 violations ⚠

Data Sources

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

Top Contaminants in South Williamson Water

Total Trihalomethanes (TTHM) 20 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

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

Housing & Infrastructure in South Williamson

1951
Median Build Year
79%
Built Before 1986
72%
Built Before 1970
Galvanized Steel or Copper
Likely Pipe Material

With 79% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

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

Housing Age Profile

Pre-1986 homes make up a large part of South Williamson's housing; median build year 1951.

1951
Median Year Built
79%
Pre-1986 (lead solder era; lead paint banned 1978)
72%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (72%) 1970–1986 (7%) Post-1986 (21%)

Over half of homes in South Williamson were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for South Williamson Homeowners

This section sets two area figures side by side for South Williamson: the median home value and an estimated remediation cost. Here the estimate equals no more than 1% of that value, which places the city in the low tier; it is an area estimate, and the cost for any one property can be higher or lower.

Median Home Value
$167,400
Est. Remediation
$600
Remediation as % of home value 0.4%

Estimated remediation costs in South Williamson 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 12% above the Kentucky average.

Lead Exposure Risk for Children in South Williamson

79%
Homes Built Before 1986

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 South Williamson

139
Total FEMA Flood Claims
$33,860
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for South Williamson contains 139 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $33,860. 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.

Frequently Asked Questions

What does the Home Safety Score mean for South Williamson, KY?
South Williamson has an average Home Safety Score of 77/100 (Grade B) 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. 10 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 South Williamson?
EPA records list 10 EPA violations, including 10 health-based violations for South Williamson water systems. These water-system violations are shown for 1 mapped ZIP code.
How does South Williamson compare to Kentucky average?
South Williamson has an average Home Safety Score of 77/100, which is at or above the Kentucky state average of 69/100 for the same model series.
How many water systems serve South Williamson?
Our records map 1 water system to 1 ZIP code in South Williamson. The related population figure in our data is approximately 301 people; it is not a count of people served citywide.
How much does it cost to fix water issues in South Williamson?
Estimated remediation cost per household in South Williamson: $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). South Williamson, KY: 10 Violations - Home Safety 77/100. https://zipcheckup.com/cities/ky/south-williamson/
BibTeX
@misc{zipcheckup-cities-ky-south-williamson,
  author = {{ZipCheckup}},
  title  = {{South Williamson, KY: 10 Violations - Home Safety 77/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ky/south-williamson/}
}

Page version: October 2026.

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