Hales Corners, WI: 1 Health Violation — 74/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Hales Corners tap water earns a high safety grade — above-average compliance with WI and federal standards.
How Hales Corners Compares
Data: EPA SDWIS Last verified: 2026-06-03
Hales Corners Water: The Quick Version
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.0009 mg/L.
- Homes built before 1986: 81% — older plumbing may contain lead solder.
- Estimated remediation: $2,500 per household.
- CDC health risk index: 13.11 — above typical levels.
Water Systems Serving Hales Corners
Structurally, Hales Corners, WI's water supply is divided. Federal data identifies 3 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 1 ZIP code in Hales Corners, Wisconsin, covering 3 community water systems serving approximately 7,647 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Hales Corners: B (74/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Hales Corners water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0009 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 14 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 4 | 1 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 53130 | B | 12 | 1 | Oakton Beach |
All ZIP Codes in Hales Corners
- 53130 [B] — 12 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
Updated daily.
CDC Health Data for Hales Corners
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Hales Corners
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Hales Corners's Housing Stock?
With 81% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Heavily weighted toward older construction, Hales Corners's housing stock carries a median build year of 1966. That profile puts a majority of homes in the era when lead-soldered copper plumbing was standard practice.
Over half of homes in Hales Corners were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Hales Corners: Remediation Cost in Perspective
Across Hales Corners, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Hales Corners are relatively low compared to home values. The $1,350–$3,900 estimated range is a small fraction of median property value. Home values are 26% above the Wisconsin average.
Protecting Children from Lead in Hales Corners
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 81% of the Hales Corners inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Hales Corners
Over the multi-decade window covered by the National Flood Insurance Program, Hales Corners has accumulated 18 claims — a total that suggests more than isolated flood exposure. With 100% of ZIP codes in designated flood zones, the water-quality implications of flooding move from hypothetical to periodically relevant: treatment intake can be compromised, wells can be infiltrated, and distribution backflow can occur.
Hales Corners has a moderate flood history with 18 FEMA claims averaging $33,301 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,500</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Hales Corners, WI