Calumet County, Wisconsin
11 ZIP codes · Avg score 74/100 · Grade B · Updated 2026-06-04
Recent water monitoring in Calumet County shows 11 ZIP codes with consistently safe results.
How Calumet County Compares
How Calumet County Compares
Calumet County scores 8 points above the Wisconsin state average (66/100) and 6 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Calumet 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 10.3%)
Estimated additional annual cost per homeowner: $891, driven primarily by energy_code_gap
Infrastructure: 0.375% avg pipe failure probability, 45% of ZIPs at high risk
65.2% 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: $891
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
41,951 housing units in Calumet 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 Calumet County
Remediation costs are relatively manageable for most homeowners in Calumet 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 Calumet 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 Calumet County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | New Holstein Waterworks | 3,012 | 8 |
| 2 | Darboy Sanitary District 1 | 13,024 | 8 |
| 3 | Harrison Utilities - Fka Waverly Sd | 5,500 | 8 |
| 4 | Sherwood Waterworks | 3,114 | 8 |
| 5 | Country Aire Mobile Home Court Llc | 98 | 6 |
19 total water systems serve Calumet County.
All ZIP Codes in Calumet County
11 ZIP codes tracked in Calumet County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 54129 | Hilbert | 83 | B | 0 | $241K |
| 2 | 53088 | Stockbridge | 82 | B | 2 (1 health) | $163K |
| 3 | 54123 | Forest Junction | 82 | B | 2 (1 health) | — |
| 4 | 54169 | Sherwood | 82 | B | 3 (1 health) | $337K |
| 5 | 53061 | New Holstein | 80 | B | 3 | $182K |
| 6 | 53062 | New Holstein | 80 | B | 3 | — |
| 7 | 54110 | Brillion | 70 | B | 0 | $218K |
| 8 | 54915 | Appleton | 67 | C | 3 | $248K |
| 9 | 54160 | Potter | 63 | C | 0 | $169K |
| 10 | 53014 | Chilton | 62 | C | 2 (1 health) | $202K |
| 11 | 54952 | Menasha | 62 | C | 2 | $190K |
Recommended Buyer Guides for Calumet County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 65.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Calumet County, Wisconsin
Overview
Calumet County in Wisconsin covers 11 ZIP codes with an average Home Safety Score of B (74/100).
8 of 11 ZIP codes have recorded EPA violations. 4 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.