CITY REPORT WI

Lannon, WI: High Radon Risk - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs with Violations
Zone 1
Radon Risk (High)
$256K
Median Home Value
$1,200
Est. Remediation (0.5% of home value)

Key Facts for Lannon Residents

  • Average lead level: 0.0021 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

Consolidated water delivery characterizes Lannon, WI: among 1 system in federal records, one utility holds the dominant service position - carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.

Overview

We track home safety data for 1 ZIP code in Lannon, Wisconsin (population ~1,475), covering 1 community water system serving approximately 23,867 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Lannon water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0021 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

Dominant radon zone: Zone 1 (High Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

ZIP Code Safety Score System Population
53046 Menomonee Falls Ww - Surface Water 23,867

All ZIP Codes in Lannon

Data Sources

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

Lannon Community Health Snapshot

10.2%
Asthma (US: 9.8%)
10.5%
Diabetes (US: 10.4%)
12.9%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 10.2% ↑
Diabetes 10.5% ↑
Mental Health 12.9% ↓

Vertical line = national average. Above national · Below national

Lannon Infrastructure Age

1996
Median Build Year
41%
Built Before 1986
31%
Built Before 1970
Copper
Likely Pipe Material

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.

1996
Median Year Built
41%
Pre-1986 (Lead Paint Risk)
31%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (31%) 1970–1986 (10%) Post-1986 (59%)

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.

Median Home Value
$255,900
Est. Remediation
$1,200
Remediation as % of home value 0.5%

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

41%
Homes Built Before 1986
0.0021
mg/L Avg Lead (Limit: 0.015)

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.

Frequently Asked Questions

Does Lannon water have lead?
The average 90th-percentile lead level in Lannon is 0.0021 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Lannon?
Lannon is served by 1 public water system across 1 ZIP code, serving approximately 1,475 people.
How much does it cost to fix water issues in Lannon?
Estimated remediation costs in Lannon average $1,200 per household, ranging from $800 to $1,500. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesWisconsin → Lannon, WI

How to cite this page

APA ZipCheckup. (2026). Lannon, WI: High Radon Risk - Home Safety Score unavailable. https://zipcheckup.com/cities/wi/lannon/
BibTeX
@misc{zipcheckup-cities-wi-lannon,
  author = {{ZipCheckup}},
  title  = {{Lannon, WI: High Radon Risk - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wi/lannon/}
}

Page version: August 2026.

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