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1,4-dioxane was mainly used as a stabilizer for chlorinated solvent 1,1,1-trichloroethane. 1,4-dioxane can also be an unintended contaminant in the production of certain products, including some…
The MPCA library provides access to the agency's curated collection of environmental information for agency employees, external professionals, and the public.
The Rum River Watershed covers 997,060 acres in east-central Minnesota, covering parts of Aitkin, Crow Wing, Morrison, Mille Lacs, Kanabec, Benton, Isanti, Chisago, Sherburne, and Anoka counties.
MPCA permits are required for construction, modification, and operation of facilities where solid waste is treated, stored, processed, transferred, or disposed.
Industrial Stormwater Steps to Compliance Step 4: Create SWPPP, choose BMPs
Across the state, water softeners contribute significantly to chloride pollution. Here’s how to make sure your water softener isn’t sending excess salt into the environment
Mesabi Metallics is currently constructing a new taconite mine and taconite pellet production facility on the site of the former Butler Taconite Mining Company facility near Nashwauk.
Each year, MPCA hires seasonal positions to assist with biological monitoring of streams and wetlands during the summer months.
State and federal permits and regulations that are designed to protect groundwater and surface water (lakes, rivers, streams, and wetlands) apply to specific facilities and processes that could pose…
Environmental regulations vary by industry. To help you navigate this, we've compiled key considerations based on common industries, processes, and equipment.
State will begin engagement next month on an updated framework set to be released in 2025
Biosolids that will be applied to land must meet strict regulations and quality standards.
The MPCA monitors water quality in rivers and streams is several different ways around the state.
Frequently asked questions about SSTS certification and licensing.
Image Aboveground storage tank (AST) requirements are found in Minnesota Rules, Chapter 7151. In general:new tanks and piping must be designed to…
Dem-Con is proposing a change to begin accepting municipal solid waste (MSW), converting approximately 2.2 million cubic yards of permitted construction and demolition (C&D) space. A project of this size requires the project to go through the Environmental Impact Statement (EIS) process.
Researchers collect samples of sediment from the bottom of Lake of the Woods in 2024. (Photo courtesy of St. Croix Watershed Research Station) After years of study…
Facilities that have site-specific state implementation plan (SIP) requirements may make changes to their operations that require changes to either their Administrative Order or Title I SIP…
Minnesota samples a network of shallow monitoring wells designed to provide early detection of contamination in the groundwater.
Find out what’s being done in Minnesota’s watersheds to protect and improve water quality.