Benton County, Indiana
9 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-03
Spanning 9 ZIP codes, Benton County carries a low water safety grade — health-based violations appear in a significant share of areas.
How Benton County Compares
How Benton County Compares
Benton 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: Benton 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 11.5%, diabetes 14.2%)
Estimated additional annual cost per homeowner: $978, driven primarily by sea_level
Infrastructure: 0.469% avg pipe failure probability, 71% of ZIPs at high risk
80.1% 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: $978
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,649 housing units in Benton 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 Benton County
Remediation costs are relatively manageable for most homeowners in Benton 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 Benton 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 Benton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Ambia Water Department | 250 | 8 |
| 2 | Boswell Water Department | 750 | 3 |
| 3 | Earl Park Municipal Water Utility | 300 | 2 |
| 4 | Otterbein Water Department | 1,262 | 2 |
| 5 | Oxford Water Utility | 1,200 | 2 |
6 total water systems serve Benton County.
All ZIP Codes in Benton County
9 ZIP codes tracked in Benton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 47917 | Ambia | 65 | C | 8 (1 health) | $204K |
| 2 | 47942 | Earl Park | 65 | C | 2 | $117K |
| 3 | 47971 | Oxford | 64 | C | 2 | $130K |
| 4 | 47944 | Fowler | 60 | C | 1 | $130K |
| 5 | 47921 | Boswell | 54 | D | 3 | $168K |
| 6 | 47970 | Otterbein | 54 | D | 2 | $163K |
| 7 | 47975 | Pine Village | 40 | D | 0 | $138K |
| 8 | 47984 | Talbot | 40 | D | 0 | — |
| 9 | 47986 | Templeton | 40 | D | 0 | — |
Recommended Buyer Guides for Benton County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 80.1% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Benton County, Indiana
Overview
Benton County in Indiana covers 9 ZIP codes with an average Home Safety Score of D (54/100).
6 of 9 ZIP codes have recorded EPA violations. 1 health-based violation 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
Benton 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
80.1% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.