Keokuk County, Iowa
17 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-03
Water safety in Keokuk County is uneven — some of its 17 ZIP codes meet standards cleanly while others carry documented violations.
How Keokuk County Compares
How Keokuk County Compares
Keokuk 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: Keokuk 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 10.2%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $755, driven primarily by water_lead
Infrastructure: 0.485% avg pipe failure probability, 94% of ZIPs at high risk
82% 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: $755
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,168 housing units in Keokuk 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 Keokuk County
Remediation costs are relatively manageable for most homeowners in Keokuk 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 Keokuk 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 Keokuk County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | SIGOURNEY MUNI WATER WORKS | 2,004 | 2 |
| 2 | Delta Water Supply | 264 | 2 |
| 3 | Rathbun Regional Water Assn (rathbun) | 33,000 | 2 |
| 4 | Keswick Water System | 252 | 1 |
| 5 | WHAT CHEER WATER SUPPLY | 607 | 1 |
11 total water systems serve Keokuk County.
All ZIP Codes in Keokuk County
17 ZIP codes tracked in Keokuk County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 50268 | What Cheer | 70 | B | 0 | $80K |
| 2 | 52563 | Hedrick | 70 | B | 1 | $116K |
| 3 | 52248 | Keota | 66 | C | 0 | $155K |
| 4 | 52355 | Webster | 66 | C | 0 | $113K |
| 5 | 52585 | Richland | 66 | C | 1 | $125K |
| 6 | 52550 | Delta | 64 | C | 1 | $115K |
| 7 | 52591 | Sigourney | 64 | C | 1 | $120K |
| 8 | 50136 | Keswick | 63 | C | 0 | $105K |
| 9 | 52335 | South English | 63 | C | 1 | $111K |
| 10 | 52231 | Harper | 55 | C | 0 | $229K |
| 11 | 52561 | Fremont | 53 | D | 0 | $102K |
| 12 | 50255 | Thornburg | 40 | D | 0 | — |
| 13 | 52562 | Hayesville | 40 | D | 0 | $58K |
| 14 | 52568 | Martinsburg | 40 | D | 0 | — |
| 15 | 52576 | Ollie | 40 | D | 0 | $144K |
| 16 | 52580 | Packwood | 40 | D | 0 | $112K |
| 17 | 52586 | Rose Hill | 40 | D | 0 | $107K |
Recommended Buyer Guides for Keokuk County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 82% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Keokuk County, Iowa
Overview
Keokuk County in Iowa covers 17 ZIP codes with an average Home Safety Score of C (55/100).
5 of 17 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.