Public meeting

WLSSD permit and variance request: Mercury in wastewater

Western Lake Superior Sanitary District (WLSSD) is a wastewater treatment facility that serves Duluth, Cloquet, Hermantown and is in the process of renewing its operating permit with the MPCA. The draft permit includes new monitoring requirements and more stringent limits set for pollutants. The WLSSD facility discharges treated wastewater into the St. Louis River estuary leading into Lake Superior. It uses physical, chemical and biological treatment systems.

As part of the permit, the city has also applied for a variance from the total mercury water quality standard. A variance is granted when meeting the standard is not feasible, and there is currently no economically feasible way to remove mercury from wastewater. The facility has satisfied the necessary conditions, and the MPCA will recommend that the EPA grant the variance after the public has provided input.

This event will offer residents an opportunity to learn more and ask questions. A short presentation will be provided at 6 pm.

Free parking is available.

In case of a weather-related cancellation, this public meeting will be provided virtually and access information will be on this event page. The MPCA will notify the public of this meeting change via a GovDelivery message, press release and/or social media.

More information

Learn more about the facility and permit on our Western Lake Superior Sanitary District page.

Registration information

No registration required.