Audubon County, Iowa
5 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-03
Based on current EPA data, Audubon County's 5 ZIP codes reflect fair but mixed water safety.
How Audubon County Compares
How Audubon County Compares
Audubon County scores 3 points below the Iowa state average (59/100) and 12 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Audubon County, Iowa
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.9 (asthma 10%, diabetes 13.6%)
Estimated additional annual cost per homeowner: $996, driven primarily by energy_code_gap
Infrastructure: 0.548% avg pipe failure probability, 80% of ZIPs at high risk
90.4% 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: $996
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,607 housing units in Audubon 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 Audubon County
Remediation costs are relatively manageable for most homeowners in Audubon 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 Audubon County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Audubon County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Kimballton Utilities | 287 | 6 |
| 2 | Brayton Water System | 143 | 1 |
| 3 | Exira Water Department | 764 | 1 |
| 4 | Audubon Water Supply | 2,053 | 0 |
All ZIP Codes in Audubon County
5 ZIP codes tracked in Audubon County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 50076 | Exira | 70 | B | 1 | $103K |
| 2 | 50042 | Brayton | 66 | C | 1 | $117K |
| 3 | 50025 | Audubon | 65 | C | 0 | $104K |
| 4 | 50117 | Hamlin | 40 | D | 0 | $215K |
| 5 | 51543 | Kimballton | 40 | D | 6 | $146K |
Recommended Buyer Guides for Audubon County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 90.4% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Audubon County, Iowa
Overview
Audubon County in Iowa covers 5 ZIP codes with an average Home Safety Score of C (56/100).
3 of 5 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.