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Water Quality Report

Duluth, WI

St. Louis County · 87,944 residents · 2 water systems

0

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Duluth drinking water comes from surface water. Based on the most recent monitoring data, 0 contaminants have been detected in the water supply. PFAS testing has been conducted with no detections.

Limited monitoring data available

The water systems serving Duluth are small private systems (population served: 87,944) and are not part of Wisconsin DNR's main contaminant monitoring program. No detected contaminant data is available for these systems.

If you're researching the main municipal utility serving Duluth, search for your specific address below — the search returns the actual water system serving your residence, which may be different from what's listed here.

Water systems serving Duluth

Duluth

86,859 servedSurface water0 contaminants1 above guideline
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Rice Lake

1,085 servedSurface water0 contaminants
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Other cities in St. Louis County

Water quality reports for nearby Minnesota communities.

AuroraBabbittBiwabikBuhlCaryChisholmCookElyEvelethFloodwoodGilbertHermantown

Frequently asked questions

Is Duluth, WI tap water safe to drink?
Duluth tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 0 contaminants have been detected in the water supply, including . 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 Duluth water?
Monitoring has detected 0 contaminants in Duluth's water supply: . 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Duluth water have PFAS?
Duluth'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 Duluth get its drinking water?
Duluth's drinking water comes from surface water sources. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Duluth is served by 2 water systems, the largest being Duluth (serving 86,859 people).

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