Portage County, Wisconsin
12 ZIP codes · Home Safety Score unavailable · 0 of 12 tracked ZIP records scored · Updated
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Portage County, Wisconsin
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.9 (asthma 10.7%, diabetes 9.6%)
Estimated additional annual cost per homeowner: $719, driven primarily by flood
60% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Portage County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 6 violations. Past 5 years: 10 total (10 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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $719
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
30,002 housing units in Portage 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 Portage County
Remediation costs are relatively manageable for most homeowners in Portage 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 Portage County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Portage County
3 community water systems serving Portage County.
Systems with the most violations in Portage County
1 water system with recorded EPA violations.
All ZIP Codes in Portage County
12 ZIP codes tracked in Portage County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 54406 | Amherst | — | — | $267K | |
| 2 | 54407 | Amherst Junction | — | — | $307K | |
| 3 | 54423 | Custer | — | — | 1 | $291K |
| 4 | 54443 | Junction City | — | — | $259K | |
| 5 | 54458 | Nelsonville | — | — | $140K | |
| 6 | 54467 | Plover | — | — | 1 | $244K |
| 7 | 54473 | Rosholt | — | — | $229K | |
| 8 | 54481 | Stevens Point | — | — | 1 | $192K |
| 9 | 54482 | Stevens Point | — | — | 1 | $266K |
| 10 | 54492 | Stevens Point | — | — | — | |
| 11 | 54909 | Almond | — | — | $188K | |
| 12 | 54921 | Bancroft | — | — | $191K |
Recommended Buyer Guides for Portage County
While many sites publish identical guide lists across every county they cover, the selection here changes by location - driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 60% of homes built before 1978
- 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 Portage County, Wisconsin
Overview
Portage County in Wisconsin covers 12 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.
4 of 4 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← Back to Wisconsin Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.