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In Minnesota, about 18,000 regulated underground storage tanks (UST) are in use. State rules specify requirements for underground storage tanks (UST) that store petroleum or hazardous substances, and any piping or other structures that are part of the tank systems.

Properly trained and certified SSTS personnel are critical. What work duties can local program staff do before becoming certified, and how can that process be expedited?

Lead-free fishing tackle is not a novelty. We provide this list of vendors that manufacture, retail, or supply nontoxic fishing weights.

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

The MPCA completed 78 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2025, for a total of 146 for the year.

The MPCA closed 118 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2023.

MPCA completed 100 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the first half of 2024

Status of total maximum daily load (TMDL) projects in Minnesota.