Randolph County, Indiana
10 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-03
Drinking water quality in Randolph County has lagged behind state benchmarks — multiple documented violations across 10 ZIP codes keep the county's grade low.
How Randolph County Compares
How Randolph County Compares
Randolph County scores 6 points below the Indiana state average (60/100) and 14 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Randolph County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.4 (asthma 11.3%, diabetes 14.3%)
Estimated additional annual cost per homeowner: $1,039, driven primarily by water_lead
Infrastructure: 0.49% avg pipe failure probability, 100% of ZIPs at high risk
79.6% 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: $1,039
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,392 housing units in Randolph 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 Randolph County
Remediation costs are relatively manageable for most homeowners in Randolph 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 Randolph 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 Randolph County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Farmland Municipal Water Works | 1,301 | 14 |
| 2 | Redkey Water Plant | 1,323 | 8 |
| 3 | Ridgeville Water Department | 825 | 8 |
| 4 | L & M Regional Water District | 450 | 6 |
| 5 | Indiana American Water - Winchester | 5,405 | 5 |
10 total water systems serve Randolph County.
All ZIP Codes in Randolph County
10 ZIP codes tracked in Randolph County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 47390 | Union City | 70 | B | 0 | $94K |
| 2 | 47368 | Parker City | 61 | C | 4 (1 health) | $104K |
| 3 | 47354 | Losantville | 59 | C | 6 | $116K |
| 4 | 47394 | Winchester | 59 | C | 5 (1 health) | $110K |
| 5 | 47340 | Farmland | 58 | C | 5 | $165K |
| 6 | 47380 | Ridgeville | 55 | C | 8 | $85K |
| 7 | 47358 | Modoc | 53 | D | 0 | $145K |
| 8 | 47360 | Mooreland | 53 | D | 0 | $187K |
| 9 | 47382 | Saratoga | 40 | D | 0 | $59K |
| 10 | 47355 | Lynn | 33 | F | 3 | $102K |
Recommended Buyer Guides for Randolph County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 79.6% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Randolph County, Indiana
Overview
Randolph County in Indiana covers 10 ZIP codes with an average Home Safety Score of D (54/100).
6 of 10 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← 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
Randolph 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
79.6% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.