Lannon, WI: 2 Violations - 64/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-07-19
ZipCheckup grade for Lannon: C.
A mixed picture - some signals here are worth your attention.
Across Lannon, EPA compliance data for WI sits at a moderate level - not alarming, but not uniformly clean across all service areas either.
How Lannon Compares
Data: EPA SDWIS Last verified: 2026-07-19
Key Facts for Lannon Residents
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Homes built before 1986: 41% - older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 11.81.
Lannon's Water Providers
Water supply in Lannon, WI follows a divided structure: 2 utilities account for the largest share of residential service out of 2 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
- C
- C
Overview
We track water quality and home safety data for 1 ZIP code in Lannon, Wisconsin (population ~1,475), covering 2 community water systems serving approximately 24,039 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Lannon: C (64/100)
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
Lannon water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High 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 | 2 | 1 |
| Revised Total Coliform Rule | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 53046 | C | 2 | 0 | Menomonee Falls Ww - Surface Water |
All ZIP Codes in Lannon
- 53046 [C] - 2 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.
Lannon Community Health Snapshot
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
What's in Lannon's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Lannon Infrastructure Age
With 41% 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
For a city with a median build year of 1996, Lannon carries a housing profile that straddles the 1986 federal ban on lead solder in plumbing. Neither predominantly new nor predominantly old, the stock presents a moderate aggregate risk environment - with individual risk varying sharply depending on when and where a specific home was built.
A significant portion of Lannon's housing stock predates 1970, when lead pipes were commonly used. Residents in older homes should consider water testing.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Lannon
In Lannon, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Lannon are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 11% above the Wisconsin average.
Lannon: Lead Risk & Vulnerable Populations
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.
Locally, 41% of Lannon homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Lannon
- Test your water at home. City-level data shows averages - your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Consumer Confidence Report Rule can reduce the most common contaminant found in Lannon's water.
- Check your home's plumbing. With 41% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Lannon, WI