Public Works & Utilities

Water Quality Reports

Drinking Water Report

The City of Duluth is issuing the results of monitoring done on its drinking water for the period from January 1 to December 31, 2017. The purpose of this report is to inform consumers about laboratory test results of the drinking water and heighten awareness of the need to protect precious water resources.

Results of Monitoring

This year again brings good news: No contaminants were found at levels that violated federal drinking water standards. There is a table in the 2017 Water Quality Report showing the contaminants detected in trace amounts last year. 

Lake Superior Supplies Duluth with Drinking Water

The source water supply for the City of Duluth is Lake Superior. It is a surface water source. The Minnesota Department of Health has determined that one or more sources of your drinking water are susceptible to contamination. If you wish to obtain the entire source water assessment regarding your drinking water, please call 1-800-818-9318 during normal business hours. You can also view it online at


2022 Water Quality Report
2021 Water Quality Report
2020 Water Quality Report
2019 Water Quality Report
2018 Water Quality Report
2017 Water Quality Report
2016 Water Quality Report
2015 Water Quality Report
2014 Water Quality Report