The St. Louis River Mercury TMDL will determine the mercury reductions needed for lakes and rivers in the St. Louis River watershed.
The U.S. EPA approved Minnesota's Statewide Mercury Total Maximum Daily Load study in March 2007.
Minnesota has a growing salty water problem. A state chloride management plan will help guide action to protect Minnesota’s water resources from chloride pollution.
High levels of suspended sediment flow through the Minnesota River and the South Metro portion of the Mississippi River. MPCA has developed a general strategy to achieve local sediment reduction goals.