Manitowoc County, Wisconsin
16 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-06-03
Across Manitowoc County's 16 ZIP codes, water safety results are uneven — a portion of systems carry active or recent violations, while others meet standards without issues.
How Manitowoc County Compares
How Manitowoc County Compares
Manitowoc County scores 1 points above the Wisconsin state average (66/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Manitowoc County, Wisconsin
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.9 (asthma 10.7%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $816, driven primarily by energy_code_gap
Infrastructure: 0.426% avg pipe failure probability, 64% of ZIPs at high risk
73.4% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Manitowoc County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 8 violations. Past 5 years: 12 total (12 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: $816
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
37,670 housing units in Manitowoc 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 Manitowoc County
Remediation costs are relatively manageable for most homeowners in Manitowoc 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 Manitowoc 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 Manitowoc County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | KELLNERSVILLE WATERWORKS | 301 | 8 |
| 2 | Manitowoc Waterworks | 34,500 | 8 |
| 3 | Two Rivers Waterworks | 11,270 | 8 |
| 4 | Mishicot Waterworks | 1,432 | 8 |
| 5 | Quiet Country Community Assn | 90 | 8 |
14 total water systems serve Manitowoc County.
All ZIP Codes in Manitowoc County
16 ZIP codes tracked in Manitowoc County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 54228 | Mishicot | 83 | B | 0 | $182K |
| 2 | 53015 | Cleveland | 82 | B | 2 (1 health) | $214K |
| 3 | 53042 | Kiel | 82 | B | 2 | $223K |
| 4 | 54230 | Reedsville | 82 | B | 2 (1 health) | $205K |
| 5 | 54247 | Whitelaw | 82 | B | 6 (1 health) | $212K |
| 6 | 54227 | Maribel | 79 | B | 2 | $238K |
| 7 | 54245 | Valders | 77 | B | 0 | $207K |
| 8 | 54221 | Manitowoc | 74 | B | 0 | — |
| 9 | 54220 | Manitowoc | 71 | B | 0 | $160K |
| 10 | 53063 | Newton | 53 | D | 0 | $242K |
| 11 | 54207 | Collins | 53 | D | 0 | $177K |
| 12 | 54214 | Francis Creek | 53 | D | 0 | $238K |
| 13 | 54232 | Saint Nazianz | 53 | D | 0 | $128K |
| 14 | 54240 | Tisch Mills | 53 | D | 0 | — |
| 15 | 54241 | Two Rivers | 52 | D | 8 (1 health) | $146K |
| 16 | 54215 | Kellnersville | 48 | D | 8 (2 health) | $148K |
Recommended Buyer Guides for Manitowoc County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 73.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Manitowoc County, Wisconsin
Overview
Manitowoc County in Wisconsin covers 16 ZIP codes with an average Home Safety Score of C (67/100).
7 of 16 ZIP codes have recorded EPA violations. 6 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.