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Per- and polyfluoroalkyl substances (PFAS) are a group of thousands of human-made chemicals that do not break down over time. PFAS are sometimes called “forever chemicals” due to their extreme…

Determine what type(s) of water quality permit is required at facilities that mine construction sand and gravel; industrial sand; quarry limestone, granite or dimension stone; operate hot mix asphalt production areas; produce concrete block, brick and other products; and/or produce ready-mix concrete.

The Minnesota Pollution Control Agency (MPCA) does not discriminate on the basis of race, color, national origin, disability, age, or sex in administration of its programs or activities, and, MPCA does not intimidate or retaliate against any individual or group because they have exercised their rights to participate in actions protected, or oppose actions prohibited, by 40 C.F.R. Parts 5 and 7, or for the purpose of interfering with such rights.

MPCA and MDH statement on the U.S. EPA's maximum contaminant levels for PFAS in drinking water.

MPCA investigation confirms discharges sediment-laden water into the Long Prairie River, in addition to other violations, during construction of CSAH 56 & 38.

What is the blue-green scum that looks like spilled paint?In lakes that are over-enriched with phosphorus and nitrogen, algae tend to prosper and create algae blooms. Blue-green algae and one type in…

The MPCA and its many partners collect a wide variety of data on environmental conditions and pollution sources.

Minnesota state agencies are working together to reduce greenhouse gas emissions that cause climate change.

Minnesota GreenCorps members serving with the City of Minneapolis developed a mini-course for residents about responsible use of deicing salt.

The MPCA proposes adding 46 new impaired bodies of water and removing 45 impairments from bodies of water from the IWL, the most removals in a two-year cycle since the state began the IWL program in 1992.

An index of biological integrity (IBI) is a particularly powerful tool that provides an accurate measure of the condition of the biological communities and are a direct determinant of the attainment of aquatic life uses.

Standard operating procedures (SOPs) reflect how agency staff and contracted partners complete agency-funded field activities.

This year’s theme is Advancing Nutrient Trading with Sustainable Farming and Conservation Practices.

This year’s forum will focus on ways to reduce nitrogen in Minnesota’s water, and ways that agricultural and urban partners are working together to improve water quality.

Thermal paper is thin with a slick feel or sheen finish and discolors easily when scratched.

Starting Jan. 1, 2025, the first prohibitions of products containing intentionally added PFAS took effect in Minnesota.

Addressing excess nutrient levels in Lake Pepin based on the site-specific water quality eutrophication criteria for the lake developed by the MPCA.

MPCA's compliance and enforcement program tracks how well wastewater treatment facilities are complying with their permits and takes enforcement actions when necessary.

The MPCA has released the draft 2025 Minnesota Nutrient Reduction Strategy for public review and comment.

MPCA rules govern how septic systems are designed, installed, and managed.