B76/100
Lac Du Flambeau Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 3,168 residents · Wisconsin
What's In Lac Du Flambeau's Tap Water?
52
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.60 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – November 11, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
LAC DU FLAMBEAU
Population Served
3,168
Water Source
Groundwater
System ID
055295401
Frequently Asked Questions About Lac Du Flambeau Water
Is Lac Du Flambeau tap water safe to drink?
Lac Du Flambeau, Wisconsin tap water receives a grade of B (76/100), which is considered good. Out of 52 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Lac Du Flambeau's water?
Of the 52 contaminants tested in Lac Du Flambeau's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Lac Du Flambeau have any water quality violations?
Yes, Lac Du Flambeau has 9 EPA violation(s) on record, with the most recent in 2023. Violation types include RPT, MR, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lac Du Flambeau?
Based on EPA data, using a water filter in Lac Du Flambeau is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Lac Du Flambeau's tap water come from?
Lac Du Flambeau's drinking water is sourced from groundwater and supplied by LAC DU FLAMBEAU. The system serves approximately 3,168 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Lac Du Flambeau's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Lac Du Flambeau's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Lac Du Flambeau's water compare to other cities in Wisconsin?
Lac Du Flambeau's water quality score of 76/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Wisconsin state page to see how all cities in the state compare.
What should I do if I'm concerned about Lac Du Flambeau's water quality?
If you have concerns about Lac Du Flambeau's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (LAC DU FLAMBEAU) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.