Iron County, Wisconsin
9 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-03
Iron County's water quality grade reflects a middle-ground assessment — its 9 ZIP codes range from fully compliant to violation-flagged.
How Iron County Compares
How Iron County Compares
Iron County scores 0 points above the Wisconsin state average (66/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Iron County, Wisconsin
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15 (asthma 10.7%, diabetes 14.6%)
Estimated additional annual cost per homeowner: $781, driven primarily by energy_code_gap
Infrastructure: 0.413% avg pipe failure probability, 56% of ZIPs at high risk
70.1% 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: $781
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,410 housing units in Iron 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 Iron County
Remediation costs are relatively manageable for most homeowners in Iron 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 Iron County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Iron County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Hurley Waterworks | 1,515 | 6 |
| 2 | MONTREAL WATERWORKS | 887 | 6 |
| 3 | MERCER SANITARY DISTRICT | 760 | 2 |
| 4 | Iron Belt Waterworks | 211 | 1 |
All ZIP Codes in Iron County
9 ZIP codes tracked in Iron County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 54536 | Iron Belt | 82 | B | 1 (1 health) | $65K |
| 2 | 54547 | Mercer | 82 | B | 2 | $279K |
| 3 | 54550 | Montreal | 82 | B | 3 (1 health) | $107K |
| 4 | 54534 | Hurley | 80 | B | 3 | $109K |
| 5 | 54525 | Gile | 53 | D | 0 | $94K |
| 6 | 54545 | Manitowish Waters | 53 | D | 0 | $648K |
| 7 | 54557 | Presque Isle | 53 | D | 0 | $409K |
| 8 | 54559 | Saxon | 53 | D | 0 | $163K |
| 9 | 54565 | Upson | 53 | D | 0 | $125K |
Recommended Buyer Guides for Iron County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 70.1% of homes built before 1978
Deep Dive Reports
Detailed analysis for Iron County, Wisconsin
Overview
Iron County in Wisconsin covers 9 ZIP codes with an average Home Safety Score of C (66/100).
4 of 9 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Wisconsin 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.