When Linda Mullen took over as water superintendent in Burnsville in 2007, the city was in the process of adding surface‐water treatment to its existing plant. Burnsville began purchasing water from the nearby Kraemer Mining and Materials quarry, both to supplement its supply and to help the quarry meet discharge permits.
Within a few years, another major project loomed when the city began a facilities plan. Burnsville ultimately selected a Microclor® system from Process Solutions, Inc. of Campbell, California. The city became the first water system in the Twin Cities metropolitan area to opt for on‐site hypochlorite generation and joined Baxter, Otsego, Fairmont, and Isanti as others in Minnesota to use the system.