Water Quality Report
Merrimac, WI
Sawyer County · 547 residents · 3 water systems
7
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
4
Above health guidelines
Merrimac drinking water comes from groundwater wells. Based on the most recent monitoring data, 7 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 3 others. PFAS testing has been conducted with no detections.
Contaminants detected in Merrimac water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0011 / 0.015 mg/L
7% of EPA limit
Nitrate1.2 / 10 mg/L
12% of EPA limit
Arsenic0.00055 / 0.01 mg/L
6% of EPA limit
Copper995 / 1300 ug/L
77% of EPA limit
Total Trihalomethanes5.3 / 80 ug/L
7% of EPA limit
Haloacetic Acids (HAA5)10.3 / 60 ug/L
17% of EPA limit
Barium0.0171 / 2 mg/L
1% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)
Other cities in Sawyer County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Merrimac, WI tap water safe to drink?
Merrimac tap water meets EPA legal standards (Maximum Contaminant Levels). However, 4 contaminants are present above independent health guidelines, which are often stricter than legal limits. 7 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes. View the detailed report for each water system to see specific levels and how they compare to both legal limits and health guidelines.
What contaminants are in Merrimac water?
Monitoring has detected 7 contaminants in Merrimac's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Barium. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Merrimac water have PFAS?
Merrimac's water has been tested for PFAS compounds with no detections. Testing was conducted as part of the EPA's Unregulated Contaminant Monitoring Rule (UCMR5) program.
Where does Merrimac get its drinking water?
Merrimac's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Merrimac is served by 3 water systems, the largest being MERRIMAC WATERWORKS (serving 440 people).
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