Williams Bay, WI - Home Safety Score unavailable
1 ZIP code · 2 water systems · Updated
Data: EPA SDWIS
What You Should Know About Williams Bay Water
- Your city's water systems recorded 9 violations since 2021.
- Average of reported 90th-percentile lead results: 0.016 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 57% - older plumbing may contain lead solder.
- Estimated remediation: $3,720 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.73.
Who Supplies Your Water in Williams Bay
More than one public water system is linked to Williams Bay, WI: federal records tie 2 systems to the area, and the 2 with the largest reported service populations are shown below. Which of them supplies a particular address depends on where the property sits, and a water bill or the utility can confirm it.
Overview
We track home safety data for 1 ZIP code in Williams Bay, Wisconsin, covering 2 community water systems serving approximately 3,264 people. 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
Williams Bay water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0160 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 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 1.
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 |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 8 | 1 |
| Consumer Confidence Rule | Reporting | 4 | 1 |
| Revised Total Coliform Rule | Microbiological | 4 | 1 |
| Public Notice Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 53191 | — | 9 | 1 | Williams Bay Waterworks |
All ZIP Codes in Williams Bay
- 53191 - 9 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Health Outcomes in Williams Bay
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
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Williams Bay Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Williams Bay
With 57% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Pre-1986 homes make up a large part of Williams Bay's housing; median build year 1971.
Over half of homes in Williams Bay were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Williams Bay Homeowners
Set against the median home value, the remediation estimate for Williams Bay lands in the middle of three tiers - above 1% but no higher than 2%.
Estimated remediation costs in Williams Bay can be compared with local home values. The estimated $2,430–$5,160 range is a planning estimate; get a property-specific quote and check it against your budget. Home values are 60% above the Wisconsin average.
Lead Exposure Risk for Children in Williams Bay
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.
No safe blood lead level in children has been identified, CDC says. In Williams Bay, the mean across ZIP codes of what water systems reported as their 90th-percentile lead results sits above 0.015 mg/L, and 57% of homes were built before 1986. A test of the tap a child drinks from shows the level in that home.
1 ZIP code (100% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Williams Bay, WI