Porter County, Indiana
6 ZIP codes · Avg score 74/100 · Grade B · Updated 2026-07-19
ZipCheckup grade for Porter: B.
This ZIP looks solid, with a few items worth a quick check.
In recent assessments, Porter County's 6 ZIP codes record strong, consistent water safety outcomes.
How Porter County Compares
How Porter County Compares
Porter County scores 14 points above the Indiana state average (60/100) and 6 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Porter County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.9%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $1,572, driven primarily by flood
Infrastructure: 0.364% avg pipe failure probability, 20% of ZIPs at high risk
53.8% 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: $1,572
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
47,492 housing units in Porter 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 Porter County
Remediation costs are relatively manageable for most homeowners in Porter 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 Porter County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Porter County
8 community water systems serving Porter County.
- B
- B
- B
- B
- D
- B
Show all 8 water systems
- B
- B
9 total water systems serve Porter County.
Systems with the most violations in Porter County
2 water systems with recorded EPA violations.
- B
- B
All ZIP Codes in Porter County
6 ZIP codes tracked in Porter County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 46347 | Kouts | 83 | B | 0 | $241K |
| 2 | 46384 | Valparaiso | 81 | B | 13 (1 health) | — |
| 3 | 46304 | Chesterton | 78 | B | 1 | $278K |
| 4 | 46385 | Valparaiso | 76 | B | 13 (1 health) | $305K |
| 5 | 46383 | Valparaiso | 71 | B | 13 (1 health) | $258K |
| 6 | 46380 | Tefft | 53 | D | 0 | — |
Recommended Buyer Guides for Porter 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 — 53.8% 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 Porter County, Indiana
Overview
Porter County in Indiana covers 6 ZIP codes with an average Home Safety Score of B (74/100).
4 of 6 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.