Doniphan County, Kansas
7 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-06-03
Spanning 7 ZIP codes, Doniphan County lands near the national median for water safety — compliance results are mixed, and the county's middle-grade standing reflects genuine variability rather than a single systemic problem.
How Doniphan County Compares
How Doniphan County Compares
Doniphan County scores 3 points above the Kansas state average (64/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Doniphan County, Kansas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.5 (asthma 10.2%, diabetes 11.5%)
Estimated additional annual cost per homeowner: $679, driven primarily by flood
Infrastructure: 0.429% avg pipe failure probability, 57% of ZIPs at high risk
72.3% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Doniphan County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 4 violations. Past 5 years: 9 total (9 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: $679
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,342 housing units in Doniphan 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 Doniphan County
Remediation costs are relatively manageable for most homeowners in Doniphan 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 Doniphan 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 Doniphan County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Doniphan Company Rwd 6 | 428 | 29 |
| 2 | Doniphan Company Rwd 5 | 1,457 | 19 |
| 3 | City of Highland, | 917 | 17 |
| 4 | Atchison Company Rwd 5c | 3,690 | 12 |
| 5 | City of Troy, | 954 | 12 |
9 total water systems serve Doniphan County.
All ZIP Codes in Doniphan County
7 ZIP codes tracked in Doniphan County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 66094 | White Cloud | 82 | B | 4 (1 health) | $155K |
| 2 | 66024 | Elwood | 71 | B | 1 | $94K |
| 3 | 66017 | Denton | 70 | B | 1 | $111K |
| 4 | 66090 | Wathena | 68 | C | 6 | $131K |
| 5 | 66087 | Troy | 67 | C | 12 | $121K |
| 6 | 66035 | Highland | 57 | C | 17 (9 health) | $155K |
| 7 | 66008 | Bendena | 53 | D | 0 | $191K |
Recommended Buyer Guides for Doniphan County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 72.3% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Doniphan County, Kansas
Overview
Doniphan County in Kansas covers 7 ZIP codes with an average Home Safety Score of C (67/100).
6 of 7 ZIP codes have recorded EPA violations. 10 health-based violations have been documented.
← Back to Kansas 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.