COUNTY REPORT KS

Hamilton County, Kansas

3 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03

Across Hamilton County, EPA compliance data for 3 ZIP codes sits at a moderate level — not alarming, but not uniformly clean either.

How Hamilton County Compares

Hamilton County61/100
Kansas avg64/100
National avg68/100

How Hamilton County Compares

C
County Grade
61/100
Avg Safety Score
3
ZIP Codes
3
Water Systems

Hamilton County scores 3 points below the Kansas state average (64/100) and 7 points below the national average (68/100).

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

C
County Grade
61
Avg Safety Score
3
ZIP Codes
Best ZIP: 67857 (65/100)
Lowest ZIP: 67836 (55/100)
$84K
Median Home Value
$1,300
Avg Remediation (155% of home value)

Key Risk Factors

Health risk index: 12.8 (asthma 9.3%, diabetes 11.8%)

Estimated additional annual cost per homeowner: $393, driven primarily by energy_code_gap

Infrastructure: 0.43% avg pipe failure probability, 67% of ZIPs at high risk

72.7% of homes built before 1978 (lead paint era)

County Health Indicators vs National Average

Asthma 9.3% (national: 8.9%)
Diabetes 11.8% (national: 10.5%)
Obesity 40.2% (national: 32.4%)

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

Infrastructure Overview

1965
Median Build Year
72.7%
Pre-1978 Housing
43%
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: $393

Energy Code Gap $210/yr
Water / Lead $183/yr

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

Housing Age Distribution

987 housing units in Hamilton County

Pre-1940 22%
1940–1959 20%
1960–1979 35%
1980–1999 21%
2000+ 2%

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 Hamilton County

$84K
Median Home Value
$1,300
Est. Remediation Cost
1.5%
of Home Value
Remediation as % of home value low burden

Remediation costs are relatively manageable for most homeowners in Hamilton 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 Hamilton County residents

Asthma 9.3% (US avg: 8.9%)
Diabetes 11.8% (US avg: 11%)
Obesity 40.2% (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 3 systems in Hamilton County ranked by EPA violation count.

# Water System Population Violations
1 City of Coolidge, 78 7
2 Hamilton Company Rwd 1 80 7
3 City of Syracuse, 1,807 4

All ZIP Codes in Hamilton County

3 ZIP codes tracked in Hamilton County.

# ZIP Code City Safety Score Grade Violations Home Value
1 67857 Kendall 65 C 7 (1 health) $84K
2 67878 Syracuse 63 C 4 $124K
3 67836 Coolidge 55 C 7 $63K

Recommended Buyer Guides for Hamilton County

Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.

Overview

Hamilton County in Kansas covers 3 ZIP codes with an average Home Safety Score of C (61/100).

3 of 3 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.

← Back to Kansas water quality report

Data Sources

Updated daily.

Frequently Asked Questions

Is water safe in Hamilton County?
Hamilton County receives a grade of C. Some ZIP codes have recorded violations and residents in affected areas may want to test their water.
How many water systems serve Hamilton County?
Hamilton County is served by 3 public water systems that supply drinking water to residents across 3 ZIP codes.
What is the biggest environmental risk in Hamilton County?
The primary environmental risk factor in Hamilton County is energy_code_gap. This contributes to an estimated additional annual cost of $393 per homeowner.
How old are homes in Hamilton County?
The median home build year in Hamilton County is 1965. 72.7% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Hamilton County compare to Kansas?
Hamilton County has an average water safety score of 61/100, which is below the Kansas state average of 64/100.

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