Health Violations Found

Lake Tomahawk, WI: 1 Health-Based Violation Recorded for Mapped Water Systems

EPA data for Lakeland Sanitary District 1

Health Violations Found

Health-based violation records by water system:

EPA records for the water systems mapped to 54539 in Lake Tomahawk, WI contain 6 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score N/A
Water Quality Issues 1 health-based violation
Lead Risk Below action level 0.0022 mg/L, 90th percentile, sample period ending 2023-09-30
NFIP Claim History N/A
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 5 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0022 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
Contaminant Summary
Health Violations
6 violations 1 health-based
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
1
Water System
2,381
People Served
1
Health Violations (since 2021)Median is 0
Groundwater
Water Source
0.0022 mg/L
Reported Lead Result
Zone 2
County Radon Potential · Moderate
$241K
Median Home Value13% above state median ($214K)

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Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
80/100
Observed
PFAS MCL screen
Unknown
Evidence missing
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
Unknown
Evidence missing

Required domains

Drinking water
Unknown
Indoor environment
50/100
Outdoor environment
Unknown

Coverage: 2 of 4 components and 1 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (5) CRITICAL

Your Water System

ZIP code 54539 in Lake Tomahawk, Wisconsin is mapped to the water system Lakeland Sanitary District 1 (EPA ID: WI7440116). This system provides water to approximately 2,381 people from groundwater sources.

Other Water Quality Reports in Wisconsin

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Lakeland Sanitary District 1 (WI7440116) on EPA.gov.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →
Environmental Hazards (10) HIGH
Home & Infrastructure (6) MODERATE
Cost & Community (8) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Lake Tomahawk

Based on local data for ZIP 54539, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Gutter Installation & Repair

The median home in 54539 was built around 1988. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 54539 safe to drink?

EPA SDWIS records 6 violations since 2021 across the water systems mapped to ZIP 54539 (primary system: Lakeland Sanitary District 1), including 1 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 54539's water come from?

The recorded water source for Lakeland Sanitary District 1, a system mapped to ZIP code 54539, is Groundwater. This system serves approximately 2,381 people.

How can I get my water tested in Lake Tomahawk?

If Lakeland Sanitary District 1 supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 54539 tap water?

The Lead and Copper Rule record selected for 54539 reports a 90th-percentile lead result of 0.0022 mg/L for a water system mapped to this ZIP (record date 2023-09-30). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 54539?

54539 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Oneida County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

How to cite this page

APA ZipCheckup. (2026). Lake Tomahawk, WI: 1 Health-Based Violation Recorded for Mapped Water Systems. https://zipcheckup.com/report/54539/
BibTeX 
@misc{zipcheckup-report-54539,
  author = {{ZipCheckup}},
  title  = {{Lake Tomahawk, WI: 1 Health-Based Violation Recorded for Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/54539/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 54539

ZIP Code City, State Distance Grade Violations
54543 Mc Naughton, WI 5.7 mi N/A 0
54531 Hazelhurst, WI 8.1 mi N/A 0
54558 Saint Germain, WI 9.3 mi N/A 9
54529 Harshaw, WI 9.3 mi N/A 0
54568 Woodruff, WI 9.5 mi N/A 6
54548 Minocqua, WI 9.6 mi N/A 6
54501 Rhinelander, WI 11.8 mi N/A 2
54560 Sayner, WI 13.1 mi N/A 0
54521 Eagle River, WI 17.8 mi N/A 3
54561 Star Lake, WI 18.4 mi N/A 0

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Coverage: 12/17 risk factors Data sources →
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