COUNTY REPORT TX

Gaines County, Texas

3 ZIP codes · Avg score 80/100 · Grade B · Updated 2026-06-03

Gaines County earns a high water safety grade — 3 ZIP codes tracked, virtually all compliant.

How Gaines County Compares

Gaines County80/100
Texas avg82/100
National avg68/100

How Gaines County Compares

B
County Grade
80/100
Avg Safety Score
3
ZIP Codes
4
Water Systems

Gaines County scores 2 points below the Texas state average (82/100) and 12 points above the national average (68/100).

Data: EPA SDWIS Last verified: 2026-06-03

B
County Grade
80
Avg Safety Score
3
ZIP Codes
Best ZIP: 79360 (92/100)
Lowest ZIP: 79359 (70/100)
$160K
Median Home Value
$1,400
Avg Remediation (87% of home value)

Key Risk Factors

Health risk index: 12.3 (asthma 10.2%, diabetes 11.8%)

Estimated additional annual cost per homeowner: $841, driven primarily by energy_code_gap

Infrastructure: 0.457% avg pipe failure probability, 67% of ZIPs at high risk

66.7% of homes built before 1978 (lead paint era)

Violation History (2021–2025)

↑ Worsening trend

EPA violation counts by year across Gaines County water systems. Health-based shown in red, total in blue.

2021
1 (1 health)
2022
5 (5 health)
2023
4 (4 health)
2024
8 (8 health)
2025
8 (8 health)

Peak year: 2024 with 8 violations. Past 5 years: 26 total (26 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.

Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.

County Health Indicators vs National Average

Asthma 10.2% (national: 8.9%)
Diabetes 11.8% (national: 10.5%)
Obesity 36.1% (national: 32.4%)

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

Infrastructure Overview

1977
Median Build Year
66.7%
Pre-1978 Housing
46%
Pipe Failure Probability
67%
ZIPs at High Infra Risk
High
Lead Pipe Risk

Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $841

Energy Code Gap $360/yr
Flood $267/yr
Water / Lead $150/yr

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

Housing Age Distribution

7,190 housing units in Gaines County

Pre-1940 4%
1940–1959 12%
1960–1979 30%
1980–1999 34%
2000+ 20%

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 Gaines County

$160K
Median Home Value
$1,400
Est. Remediation Cost
0.9%
of Home Value
Remediation as % of home value low burden

Remediation costs are relatively manageable for most homeowners in Gaines County, representing a small fraction of property value.

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 Gaines County residents

Asthma 10.2% (US avg: 8.9%)
Diabetes 11.8% (US avg: 11%)
Obesity 36.1% (US avg: 32.4%)

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

Water Systems with Most Violations

Top 4 systems in Gaines County ranked by EPA violation count.

# Water System Population Violations
1 Loop Water Supply Corporation 300 24
2 City of Denver City 5,500 23
3 City of Seagraves 2,417 23
4 City of Seminole 7,386 8

All ZIP Codes in Gaines County

3 ZIP codes tracked in Gaines County.

# ZIP Code City Safety Score Grade Violations Home Value
1 79360 Seminole 92 A 8 (3 health) $199K
2 79342 Loop 77 B 24 (7 health) $160K
3 79359 Seagraves 70 B 23 (19 health) $93K

Recommended Buyer Guides for Gaines County

Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.

Overview

Gaines County in Texas covers 3 ZIP codes with an average Home Safety Score of B (80/100).

3 of 3 ZIP codes have recorded EPA violations. 29 health-based violations have been documented.

← Back to Texas water quality report

Data Sources

Updated daily.

Frequently Asked Questions

Is water safe in Gaines County?
Gaines County receives a grade of B, indicating generally safe tap water across its 3 ZIP codes.
How many water systems serve Gaines County?
Gaines County is served by 4 public water systems that supply drinking water to residents across 3 ZIP codes.
What is the biggest environmental risk in Gaines County?
The primary environmental risk factor in Gaines County is energy_code_gap. This contributes to an estimated additional annual cost of $841 per homeowner.
How old are homes in Gaines County?
The median home build year in Gaines County is 1977. 66.7% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Gaines County compare to Texas?
Gaines County has an average water safety score of 80/100, which is below the Texas state average of 82/100.

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