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The Minnesota River - Yellow Medicine River Watershed (1.3 million acres) has traditionally been managed as two separate watersheds, the Hawk Creek Watershed to the north of the Minnesota River and the Yellow Medicine River Watershed to the south.

The Minnesota Pollution Control Agency (MPCA) has canceled portions of the current air quality alert for western and southern Minnesota. The alert runs until 11 p.m. on Friday, July 25. Fine particle levels are expected to reach the red air quality index (AQI) category, a level considered unhealthy for everyone, in east central Minnesota, and the orange AQI category, a level considered unhealthy for sensitive groups, across the remainder of the alert area.

MPCA is planning new rules governing how the MPCA determines currently unavoidable uses of per- and polyfluoroalkyl substances (PFAS) in products.

Communities that are resilient to climate change are able to effectively to prepare for and recover from its effects, and continue to thrive.

Waterways in the northeastern part of the state are generally in better condition than those in the southern, central, and western regions.

Volkswagen settlement dollars are funding the replacement of older, dirtier diesel engines with newer, cleaner equipment.

Licensing and certification requirements for SSTS businesses and professionals.

Nitrogen management plans help operators of wastewater treatment facilities understand the inputs of nitrogen to their facilities and evaluate options that can reduce the amount of nitrogen discharged.

In rules, an incorporation by reference states that the contents of another document are part of the rule, even though the text of the referenced document does not appear in the rule itself.

Distribution media include both public domain products like aggregate or drainfield rocks, and proprietary products like expanded polystyrene aggregate and chambers.

Create an editable spreadsheet of details about your facility to make calculations of emissions.

Volunteer-collected data are regularly used in decision-making and conservation efforts. Find a program that excites you and join in.

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.

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