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Permit applications must include detailed emissions calculations to help determine which permit type or permit amendment is needed.

“Area C” is the name given to Ford Motor Company’s former industrial waste dump on the floodplain of the Mississippi River, at the base of the bluff below the former Twin Cities Assembly Plant in Saint Paul.

Water quality trades that have been arranged in Minnesota illustrate many opportunities to enhance pollution reduction efforts while offering flexibility and cost savings to regulated municipalities and industries.

Under the federal Clean Water Act, states must designate beneficial uses for all waters and develop water quality standards to protect each use.

Kohlman Lake, one of 27 bodies of water to come off the impaired waters list this year, did so with substantial help from the Clean Water Fund.

The MPCA recognized 236 wastewater facilities for outstanding operations in 2024.

MPCA recognized 253 municipal and industrial wastewater treatment plants for outstanding operations in 2023.

A water quality variance is a temporary change in a state's water quality standard for a specific pollutant and its relevant criteria, allowing deviation from meeting a water quality-based effluent limit for a particular discharger.