Carroll County, Iowa
15 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
In recent monitoring cycles, Carroll County's 15 ZIP codes show a split record — several have documented water safety violations.
How Carroll County Compares
How Carroll County Compares
Carroll County scores 1 points above the Iowa state average (59/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Carroll County, Iowa
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.1 (asthma 9.8%, diabetes 12.3%)
Estimated additional annual cost per homeowner: $809, driven primarily by energy_code_gap
Infrastructure: 0.514% avg pipe failure probability, 93% of ZIPs at high risk
83.5% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Carroll County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 3 violations. Past 5 years: 7 total (7 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: $809
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
10,461 housing units in Carroll 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 Carroll County
Remediation costs are relatively manageable for most homeowners in Carroll 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 Carroll 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 Carroll County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Coon Rapids Municipal Utilities | 1,300 | 15 |
| 2 | Dedham Water Supply | 221 | 15 |
| 3 | Lanesboro Water Works | 119 | 9 |
| 4 | Ralston Water Treatment Plant | 81 | 3 |
| 5 | Breda Water Supply | 500 | 2 |
16 total water systems serve Carroll County.
All ZIP Codes in Carroll County
15 ZIP codes tracked in Carroll County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 50058 | Coon Rapids | 70 | B | 0 | $148K |
| 2 | 51455 | Manning | 70 | B | 0 | $125K |
| 3 | 51444 | Halbur | 66 | C | 1 | $148K |
| 4 | 51452 | Lidderdale | 66 | C | 0 | $120K |
| 5 | 51454 | Manilla | 66 | C | 2 | $139K |
| 6 | 51459 | Ralston | 66 | C | 1 | $84K |
| 7 | 51463 | Templeton | 66 | C | 0 | $165K |
| 8 | 51436 | Breda | 65 | C | 2 | $217K |
| 9 | 51443 | Glidden | 65 | C | 2 | $182K |
| 10 | 51401 | Carroll | 63 | C | 0 | $192K |
| 11 | 51430 | Arcadia | 55 | C | 1 | $164K |
| 12 | 51440 | Dedham | 50 | D | 15 | $156K |
| 13 | 51451 | Lanesboro | 50 | D | 9 (7 health) | $91K |
| 14 | 50110 | Gray | 40 | D | 0 | — |
| 15 | 51432 | Aspinwall | 40 | D | 0 | $76K |
Recommended Buyer Guides for Carroll County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 83.5% 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 Carroll County, Iowa
Overview
Carroll County in Iowa covers 15 ZIP codes with an average Home Safety Score of C (60/100).
8 of 15 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← 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.