Miami County, Kansas
5 ZIP codes · Avg score 78/100 · Grade B · Updated 2026-06-03
Miami County — 5 ZIP codes, above-average safety grade.
How Miami County Compares
How Miami County Compares
Miami County scores 14 points above the Kansas state average (64/100) and 10 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Miami County, Kansas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.6 (asthma 9.8%, diabetes 10.8%)
Estimated additional annual cost per homeowner: $528, driven primarily by flood
Infrastructure: 0.342% avg pipe failure probability, 20% of ZIPs at high risk
51.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Miami County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 9 violations. Past 5 years: 15 total (15 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $528
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
11,502 housing units in Miami 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 Miami County
Remediation costs are relatively manageable for most homeowners in Miami 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 Miami 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 Miami County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Miami Company Rwd 2 | 10,311 | 26 |
| 2 | Miami Company Rwd 3 | 2,435 | 23 |
| 3 | Linn Company Rwd 1 | 1,200 | 23 |
| 4 | City of Osawatomie, | 4,280 | 20 |
| 5 | Franklin Company Rwd 6 | 2,960 | 20 |
13 total water systems serve Miami County.
All ZIP Codes in Miami County
5 ZIP codes tracked in Miami County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 66036 | Hillsdale | 82 | B | 3 (1 health) | — |
| 2 | 66026 | Fontana | 81 | B | 2 | $222K |
| 3 | 66053 | Louisburg | 80 | B | 1 | $300K |
| 4 | 66071 | Paola | 77 | B | 5 (1 health) | $261K |
| 5 | 66064 | Osawatomie | 72 | B | 15 (8 health) | $162K |
Recommended Buyer Guides for Miami 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 — 51.3% 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 Miami County, Kansas
Overview
Miami County in Kansas covers 5 ZIP codes with an average Home Safety Score of B (78/100).
5 of 5 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.