Public Works & Utilities

Testing for Lead After Replacement

Locations that have had a lead line replacement are automatically sent a water sampling kit approximately 4 to 6 months after construction.  Residents are given instructions on how to collect the sample and return it through the mail.  Results will be mailed within a few weeks after the sample is received at the lab.

Water Treatment Optimization Using Orthophosphate

Drinking water systems containing lead service lines are required to use treatment strategies to prevent lead from dissolving into drinking water. Duluth is working to optimize its treatment using an orthophosphate additive with the goal of reducing residents’ exposure to lead, initially in the Woodland, Kenwood, and Morley Heights-Parkview neighborhoods beginning in the fall of 2026.   

The inclusion of orthophosphate to the drinking water is expected to reduce lead exposure, particularly for those who are served by a lead service line. This additive is certified by the National Sanitary Foundation (NSF) for use in drinking water and is used by cities across our state and  country.  There are no known health concerns associated with orthophosphate treatment.

See our FAQ page for more details about orthophosphate in our water system. 

Questions can be directed to the Lead Removal Program through email at leadremoval@duluthmn.gov or by phone, 218-730-4673.

FAQs

Water Quality

The Annual Drinking Water Quality report provides information on your drinking water and how to protect our precious water resources.

Water Quality Reports