Henry County, Iowa
12 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-03
Safe water is the norm for most of Henry County's 12 ZIP codes — but a notable subset have documented violations that push the grade to the middle tier.
How Henry County Compares
How Henry County Compares
Henry County scores 4 points below the Iowa state average (59/100) and 13 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Henry 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 (asthma 9.8%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $551, driven primarily by energy_code_gap
Infrastructure: 0.455% avg pipe failure probability, 91% of ZIPs at high risk
74.3% 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: $551
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,827 housing units in Henry 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 Henry County
Remediation costs are relatively manageable for most homeowners in Henry 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 Henry 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 Henry County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Rathbun Reg Wtr Assn (burlington) | 8,375 | 3 |
| 2 | Rathbun Regional Water (mount Pleasant) | 1,465 | 3 |
| 3 | Rathbun Reg Water Assn (ft Madison) | 11,840 | 2 |
| 4 | SALEM WATER SUPPLY | 396 | 2 |
| 5 | Columbus City Public Water Supply | 392 | 2 |
15 total water systems serve Henry County.
All ZIP Codes in Henry County
12 ZIP codes tracked in Henry County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 52641 | Mount Pleasant | 70 | B | 0 | $164K |
| 2 | 52630 | Hillsboro | 66 | C | 0 | $50K |
| 3 | 52645 | New London | 66 | C | 0 | $135K |
| 4 | 52654 | Wayland | 66 | C | 1 | $140K |
| 5 | 52659 | Winfield | 66 | C | 0 | $109K |
| 6 | 52647 | Olds | 65 | C | 2 | $138K |
| 7 | 52649 | Salem | 62 | C | 2 | $217K |
| 8 | 52631 | Houghton | 40 | D | 0 | $238K |
| 9 | 52644 | Mount Union | 40 | D | 0 | $155K |
| 10 | 52652 | Swedesburg | 40 | D | 0 | $171K |
| 11 | 52660 | Yarmouth | 40 | D | 0 | $209K |
| 12 | 52642 | Rome | 33 | F | 0 | — |
Recommended Buyer Guides for Henry County
Below: editorial picks, no sponsored placements.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 74.3% 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 Henry County, Iowa
Overview
Henry County in Iowa covers 12 ZIP codes with an average Home Safety Score of C (55/100).
3 of 12 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.