Hardin County, Iowa
13 ZIP codes · Avg score 58/100 · Grade C · Updated 2026-06-03
Within Hardin County, 13 tracked ZIP codes reveal moderate water quality — national standards are generally met, with some documented exceptions.
How Hardin County Compares
How Hardin County Compares
Hardin County scores 1 points below the Iowa state average (59/100) and 10 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hardin County, Iowa
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.4 (asthma 10%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $856, driven primarily by energy_code_gap
Infrastructure: 0.526% avg pipe failure probability, 91% of ZIPs at high risk
89.9% of homes built before 1978 (lead paint era)
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: $856
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,619 housing units in Hardin 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 Hardin County
Remediation costs are relatively manageable for most homeowners in Hardin 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 Hardin 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 Hardin County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Iowa Falls Water Department | 5,146 | 10 |
| 2 | Chase Mobile Home Park | 85 | 9 |
| 3 | Eldora Water Supply | 2,664 | 6 |
| 4 | Steamboat Rock Water Department | 264 | 6 |
| 5 | New Providence Water Supply | 236 | 1 |
11 total water systems serve Hardin County.
All ZIP Codes in Hardin County
13 ZIP codes tracked in Hardin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 50006 | Alden | 70 | B | 0 | $117K |
| 2 | 50258 | Union | 70 | B | 0 | $100K |
| 3 | 50601 | Ackley | 70 | B | 1 | $114K |
| 4 | 50672 | Steamboat Rock | 67 | C | 6 | $128K |
| 5 | 50122 | Hubbard | 66 | C | 0 | $110K |
| 6 | 50230 | Radcliffe | 66 | C | 0 | $148K |
| 7 | 50627 | Eldora | 66 | C | 0 | $122K |
| 8 | 50206 | New Providence | 62 | C | 1 | $116K |
| 9 | 50126 | Iowa Falls | 56 | C | 9 | $118K |
| 10 | 50043 | Buckeye | 40 | D | 0 | — |
| 11 | 50102 | Garden City | 40 | D | 0 | $61K |
| 12 | 50259 | Gifford | 40 | D | 0 | — |
| 13 | 50269 | Whitten | 40 | D | 0 | $49K |
Recommended Buyer Guides for Hardin County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 89.9% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Hardin County, Iowa
Overview
Hardin County in Iowa covers 13 ZIP codes with an average Home Safety Score of C (58/100).
4 of 13 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Iowa 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.