CITY REPORT TX

Lewisville, TX: 22 Violations - Home Safety 95/100

4 ZIP codes · 7 water systems · Updated

ZipCheckup grade for Lewisville: A.

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

Within Lewisville, TX, the available records add up to an upper-tier grade; that grade describes records, not the water at a given faucet.

How Lewisville Compares

Lewisville95/100
Texas avg83/100
National avg73/100

Data: EPA SDWIS

4
ZIP Codes
7
Water Systems
3
ZIPs Linked to Systems with Violations
A · 95
Avg Safety Score
Zone 3
County Radon Potential (Low)
$321K
Median Home Value
$500
Est. Remediation (0.2% of home value)

Lewisville Water: The Quick Version

  • Your city's water systems recorded 22 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0014 mg/L.
  • Homes built before 1986: 34% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 10.56.

Water Systems Serving Lewisville

Service in Lewisville, TX can differ by address: 7 water systems are tied to the area in federal records, and the 3 largest are listed with their violation records.

Overview

We track home safety data for 4 ZIP codes in Lewisville, Texas (population ~126,170), covering 7 community water systems serving approximately 303,796 people region-wide. The EPA snapshots used for this build directly map water systems to 3 of 4 ZIP codes.

3 of 3 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Lewisville: A (95/100)

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

Lewisville water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0014 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 3 ZIP codes with known status exceed the EPA lead action level

Radon Risk

4 of 4 ZIP records with known zones are 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
Public Notice Rule Reporting 10 1
Lead and Copper Rule Treatment Technique 8 3
Lead and Copper Rule Revisions Treatment Technique 7 2
Consumer Confidence Rule Reporting 6 2
Chlorine Disinfectant 4 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
75077 A 18 0 City of Lewisville
75067 A 6 0 City of Lewisville
75057 A 1 0 City of Lewisville

All ZIP Codes in Lewisville

Data Sources

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

CDC Health Data for Lewisville

9.3%
Asthma (US: 9.8%)
9.9%
Diabetes (US: 10.4%)
15.8%
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 9.3% ↓
Diabetes 9.9% ↓
Mental Health 15.8% ↑

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

Key Contaminants Detected in Lewisville

Public Notice Rule 10 violations
Reporting
Lead and Copper Rule 8 violations
Treatment Technique
Developmental delays in children, kidney damage
Lead and Copper Rule Revisions 7 violations
Treatment Technique

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

How Old Is Lewisville's Housing Stock?

1996
Median Build Year
34%
Built Before 1986
9%
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 Lewisville, a certified lab test of tap water answers what the median build year of 1996 cannot.

1996
Median Year Built
34%
Pre-1986 (lead solder era; lead paint banned 1978)
9%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (9%) 1970–1986 (25%) Post-1986 (66%)

Most homes in Lewisville 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.

Lewisville: Remediation Cost in Perspective

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

Median Home Value
$321,100
Est. Remediation
$500
Remediation as % of home value 0.2%

Estimated remediation costs in Lewisville can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 41% above the Texas average.

Protecting Children from Lead in Lewisville

34%
Homes Built Before 1986
0.0014
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 Flood-Claim Evidence for Lewisville

117
Total FEMA Flood Claims
$26,516
Avg Reported Sum With Payment Data
67%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Lewisville contains 117 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $26,516. Among ZIP codes with claim records, 67% 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 $500 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 Lewisville, TX

Frequently Asked Questions

What does the Home Safety Score mean for Lewisville, TX?
Lewisville has an average Home Safety Score of 95/100 (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. 22 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 Lewisville?
EPA records list 22 EPA violations for Lewisville water systems. These water-system violations are shown for 4 mapped ZIP codes.
Does Lewisville water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Lewisville is 0.0014 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 Lewisville compare to Texas average?
Lewisville has an average Home Safety Score of 95/100, which is at or above the Texas state average of 83/100 for the same model series.
How many water systems serve Lewisville?
Our records map 7 water systems to 4 ZIP codes in Lewisville. The related population figure in our data is approximately 126,170 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Lewisville?
Estimated remediation cost per household in Lewisville: $500; modeled range $300 to $800. 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). Lewisville, TX: 22 Violations - Home Safety 95/100. https://zipcheckup.com/cities/tx/lewisville/
BibTeX 
@misc{zipcheckup-cities-tx-lewisville,
  author = {{ZipCheckup}},
  title  = {{Lewisville, TX: 22 Violations - Home Safety 95/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/tx/lewisville/}
}

Page version: October 2026.

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