CITY REPORT WI HEALTH VIOLATIONS: 1

Sherwood, WI: 6 Violations - Home Safety Score unavailable

1 ZIP code · 3 water systems · Updated

Data: EPA SDWIS

1
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
Zone 2
County Radon Potential (Moderate)
$337K
Median Home Value
$300
Est. Remediation (0.1% of home value)

Sherwood Water: The Quick Version

  • Your city's water systems recorded 6 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0005 mg/L.
  • Homes built before 1986: 22% - older plumbing may contain lead solder.
  • Estimated remediation: $300 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.93.

Water Systems Serving Sherwood

Service in Sherwood, WI can differ by address: 3 water systems are tied to the area in federal records, and the 3 largest are listed with their violation records.

Overview

We track home safety data for 1 ZIP code in Sherwood, Wisconsin (population ~3,204), covering 3 community water systems serving approximately 21,638 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

Water Sources

Sherwood water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0005 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Public Notice Rule Reporting 4 1
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1
Lead and Copper Rule Revisions Treatment Technique 2 1
Consumer Confidence Rule Reporting 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
54169 — 6 1 Sherwood Waterworks

All ZIP Codes in Sherwood

  • 54169 - 6 violations ⚠

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Sherwood

10.7%
Asthma (US: 9.8%)
10.3%
Diabetes (US: 10.4%)
15.1%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.7% ↑
Diabetes 10.3% ↓
Mental Health 15.1% ↑

Vertical line = national average. ■ Above national · ■ Below national

Key Contaminants Detected in Sherwood

Public Notice Rule 4 violations
Reporting
Haloacetic Acids (HAA5) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL
Total Trihalomethanes (TTHM) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.08 mg/L
Increased cancer risk with long-term exposure above the MCL

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

How Old Is Sherwood's Housing Stock?

2008
Median Build Year
22%
Built Before 1986
6%
Built Before 1970
PEX or Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

The median build year for Sherwood is 2008. A build year alone does not tell you what pipes or solder a home has.

2008
Median Year Built
22%
Pre-1986 (lead solder era; lead paint banned 1978)
6%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (6%) 1970–1986 (16%) Post-1986 (78%)

Most homes in Sherwood were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Sherwood: Remediation Cost in Perspective

Low tier for Sherwood: remediation estimated at up to 1% of what homes are worth.

Median Home Value
$336,800
Est. Remediation
$300
Remediation as % of home value 0.1%

Estimated remediation costs in Sherwood can be compared with local home values. The $150–$600 estimated range can be set against the median property value; actual costs vary by home. Home values are 46% above the Wisconsin average.

Protecting Children from Lead in Sherwood

22%
Homes Built Before 1986
0.0005
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

A tap test is the direct way to learn the lead level in a given Sherwood home; 22% of local housing predates 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

How many violations are on record for water systems serving Sherwood?
EPA records list 6 EPA violations, including 1 health-based violation for Sherwood water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Sherwood water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Sherwood is 0.0005 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Sherwood?
Our records map 3 water systems to 1 ZIP code in Sherwood. The related population figure in our data is approximately 3,204 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Sherwood?
Estimated remediation cost per household in Sherwood: $300; modeled range $150 to $600. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Sherwood, WI: 6 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/wi/sherwood/
BibTeX
@misc{zipcheckup-cities-wi-sherwood,
  author = {{ZipCheckup}},
  title  = {{Sherwood, WI: 6 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wi/sherwood/}
}

Page version: October 2026.

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