Miami County, Indiana
6 ZIP codes · Avg score 52/100 · Grade D · Updated 2026-06-03
Poor compliance rates put Miami County in the bottom safety tier — 6 ZIP codes, below the state average.
How Miami County Compares
How Miami County Compares
Miami County scores 8 points below the Indiana state average (60/100) and 16 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Miami County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.6 (asthma 11.2%, diabetes 14.6%)
Estimated additional annual cost per homeowner: $1,003, driven primarily by water_lead
Infrastructure: 0.47% avg pipe failure probability, 80% of ZIPs at high risk
78.8% 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: $1,003
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,701 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 | CONVERSE WATER WORKS | 1,265 | 5 |
| 2 | Greentown Municipal Water | 2,500 | 5 |
| 3 | Peru Utilities/grissom | 2,500 | 4 |
| 4 | Peru Water Department | 11,417 | 4 |
| 5 | Maple Lawn Village | 250 | 4 |
8 total water systems serve Miami County.
All ZIP Codes in Miami County
6 ZIP codes tracked in Miami County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 46914 | Bunker Hill | 70 | B | 0 | $121K |
| 2 | 46919 | Converse | 56 | C | 5 | $145K |
| 3 | 46970 | Peru | 55 | C | 4 | $111K |
| 4 | 46911 | Amboy | 53 | D | 0 | $203K |
| 5 | 46959 | Miami | 40 | D | 0 | — |
| 6 | 46971 | Grissom Arb | 40 | D | 0 | — |
Recommended Buyer Guides for Miami County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 78.8% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Miami County, Indiana
Overview
Miami County in Indiana covers 6 ZIP codes with an average Home Safety Score of D (52/100).
2 of 6 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Indiana 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.
What You Can Do
Miami County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
78.8% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.