Grant County, Indiana
11 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-03
Spanning 11 ZIP codes, Grant 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 Grant County Compares
How Grant County Compares
Grant County scores 4 points below the Indiana state average (60/100) and 12 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Grant County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.5 (asthma 11.7%, diabetes 15.2%)
Estimated additional annual cost per homeowner: $1,065, driven primarily by flood
Infrastructure: 0.437% avg pipe failure probability, 73% of ZIPs at high risk
76.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Grant County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 3 violations. Past 5 years: 5 total (5 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: $1,065
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
29,485 housing units in Grant 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 Grant County
Remediation costs are relatively manageable for most homeowners in Grant 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 Grant 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 Grant County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Fairmount Water Works | 2,756 | 26 |
| 2 | Jonesboro Water Department | 2,034 | 26 |
| 3 | UPLAND WATER DEPARTMENT | 3,308 | 18 |
| 4 | Fairmount Mhp, L.p. | 80 | 17 |
| 5 | Liberty Mobile Home Park | 50 | 17 |
9 total water systems serve Grant County.
All ZIP Codes in Grant County
11 ZIP codes tracked in Grant County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 46933 | Gas City | 69 | C | 6 (1 health) | $123K |
| 2 | 46928 | Fairmount | 68 | C | 17 (2 health) | $119K |
| 3 | 46953 | Marion | 65 | C | 0 | $88K |
| 4 | 46989 | Upland | 64 | C | 1 | $183K |
| 5 | 46952 | Marion | 60 | C | 0 | $129K |
| 6 | 46938 | Jonesboro | 54 | D | 9 | $91K |
| 7 | 46957 | Matthews | 53 | D | 0 | $77K |
| 8 | 46991 | Van Buren | 52 | D | 3 | $105K |
| 9 | 46986 | Swayzee | 48 | D | 8 | $139K |
| 10 | 46930 | Fowlerton | 40 | D | 0 | $93K |
| 11 | 46987 | Sweetser | 40 | D | 0 | $136K |
Recommended Buyer Guides for Grant County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Lead Paint Test Kits — 76.3% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Grant County, Indiana
Overview
Grant County in Indiana covers 11 ZIP codes with an average Home Safety Score of C (56/100).
6 of 11 ZIP codes have recorded EPA violations. 3 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.