Hamilton County, Nebraska
6 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-03
Although much of Hamilton County meets baseline standards, some of its 6 ZIP codes show violations that merit closer attention.
How Hamilton County Compares
How Hamilton County Compares
Hamilton County scores 4 points below the Nebraska state average (65/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hamilton County, Nebraska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.9 (asthma 9.2%, diabetes 10.5%)
Estimated additional annual cost per homeowner: $928, driven primarily by energy_code_gap
Infrastructure: 0.433% avg pipe failure probability, 50% of ZIPs at high risk
72.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Hamilton County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 4 violations. Past 5 years: 16 total (16 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $928
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,040 housing units in Hamilton County
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
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
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Hamilton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Phillips, Village of | 385 | 13 |
| 2 | Hampton, Village of | 432 | 1 |
| 3 | Hordville, Village of | 147 | 1 |
| 4 | Marquette, Village of | 236 | 1 |
| 5 | Prairie West Mobile Home Park | 60 | 1 |
7 total water systems serve Hamilton County.
All ZIP Codes in Hamilton County
6 ZIP codes tracked in Hamilton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 68818 | Aurora | 70 | B | 0 | $244K |
| 2 | 68841 | Giltner | 70 | B | 0 | $219K |
| 3 | 68854 | Marquette | 68 | C | 1 | $273K |
| 4 | 68846 | Hordville | 66 | C | 1 | $87K |
| 5 | 68843 | Hampton | 53 | D | 1 (1 health) | $225K |
| 6 | 68865 | Phillips | 38 | F | 13 (13 health) | $282K |
Recommended Buyer Guides for Hamilton County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Lead Paint Test Kits — 72.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Hamilton County, Nebraska
Overview
Hamilton County in Nebraska covers 6 ZIP codes with an average Home Safety Score of C (61/100).
4 of 6 ZIP codes have recorded EPA violations. 14 health-based violations have been documented.
← Back to Nebraska water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.