CITY REPORT WI

Lannon, WI: High Radon Potential Area - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$256K
Median Home Value

Key Facts for Lannon Residents

  • Average of reported 90th-percentile lead results: 0.0021 mg/L.
  • Homes built before 1986: 41% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 11.81.

Lannon's Water Providers

Public water system records for Lannon, WI point to a single listed provider, drawn from 1 system in the federal data; its violation record appears below.

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 of reported 90th-percentile lead results: 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

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.

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). County health indicators are shown for context only and are not linked to this area's water records.

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
37%
Built Before 1970
Copper
Likely Pipe Material

With 41% 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

For a household in Lannon, a certified lab test of tap water answers what the median build year of 1996 cannot.

1996
Median Year Built
41%
Pre-1986 (lead solder era; lead paint banned 1978)
37%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (37%) 1970–1986 (4%) Post-1986 (59%)

A significant portion of Lannon's housing stock predates 1970, so some homes may have older plumbing materials. Residents in older homes should consider water testing.

Source: U.S. Census Bureau ACS B25034.

Lannon: Lead Risk & Vulnerable Populations

41%
Homes Built Before 1986
0.0021
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.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

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 of the reported 90th-percentile lead results across the ZIP codes of Lannon is 0.0021 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 Lannon?
Our records map 1 water system to 1 ZIP code in Lannon. The related population figure in our data is approximately 1,475 people; it is not a count of people served citywide.
Home → Cities → Wisconsin → Lannon, WI

How to cite this page

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

Page version: October 2026.

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