Richland County, Wisconsin
8 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-04
In recent monitoring cycles, Richland County's 8 ZIP codes show a split record — several have documented water safety violations.
How Richland County Compares
How Richland County Compares
Richland County scores 6 points below the Wisconsin state average (66/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Richland County, Wisconsin
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 10.9%, diabetes 13.4%)
Estimated additional annual cost per homeowner: $1,175, driven primarily by energy_code_gap
Infrastructure: 0.421% avg pipe failure probability, 63% of ZIPs at high risk
77.6% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Richland County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 4 violations. Past 5 years: 5 total (5 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: $1,175
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,221 housing units in Richland 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 Richland County
Remediation costs are relatively manageable for most homeowners in Richland 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 Richland 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 Richland County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Richland Center Waterworks | 5,100 | 9 |
| 2 | Pine Valley Community Village | 225 | 9 |
| 3 | Pearces Mobile Home Estates | 37 | 9 |
| 4 | Cazenovia Waterworks | 351 | 5 |
| 5 | Sextonville Waterworks | 425 | 3 |
9 total water systems serve Richland County.
All ZIP Codes in Richland County
8 ZIP codes tracked in Richland County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 53573 | Muscoda | 70 | B | 0 | $169K |
| 2 | 53556 | Lone Rock | 69 | C | 2 | $177K |
| 3 | 53924 | Cazenovia | 69 | C | 5 (1 health) | $209K |
| 4 | 53584 | Sextonville | 65 | C | 3 | — |
| 5 | 53518 | Blue River | 64 | C | 0 | $147K |
| 6 | 53540 | Gotham | 53 | D | 0 | $113K |
| 7 | 53581 | Richland Center | 46 | D | 9 (4 health) | $180K |
| 8 | 53942 | Lime Ridge | 40 | D | 0 | $120K |
Recommended Buyer Guides for Richland County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 77.6% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Richland County, Wisconsin
Overview
Richland County in Wisconsin covers 8 ZIP codes with an average Home Safety Score of C (60/100).
4 of 8 ZIP codes have recorded EPA violations. 5 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.