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From 2023-2025, Northshore Mining released recycled water to the ground seven times and water relating to mining processes four times. Its largest unpermitted release was nearly 400,000 gallons of recycled water. Northshore Mining has documented equipment failure as the reason for the 11 releases.
MPCA investigation found that Rainy Lake Oil failed to repair a pipe that was leaking diesel fuel underground for more than four months in 2024.
Minnesota has revised state water quality standards to incorporate a tiered aquatic life use (TALU) framework for rivers and streams.
Wild rice is an important part of the biological community in many Minnesota lakes, streams, and wetlands, and a cultural resource to many, particularly members of the Dakota and Ojibwe Tribal Nations in Minnesota.
MPCA investigation confirms discharges sediment-laden water into the Long Prairie River, in addition to other violations, during construction of CSAH 56 & 38.
A waste tire transporter removes waste tires from a waste tire generator, tire dump, or waste tire facility and delivers the waste tires for aggregation, storage, or processing.
The MPCA has important roles in protecting and restoring waters in degraded conditions.
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.
Every two years, MPCA creates a list of impaired waters in the state that do not meet water quality standards.
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.
Minnesota state agencies are working together to reduce greenhouse gas emissions that cause climate change.
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.
Forms, guidance, and assistance to apply for an air quality permit.
Nitrogen, like phosphorus, is a nutrient that pollutes in state waters, and its concentration in many rivers has been increasing from historic natural levels over time due to human influences.…
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.
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.
MPCA rules govern how septic systems are designed, installed, and managed.
A 2008 law requires the MPCA to analyze and consider “cumulative levels and effects of past and current pollution” for air permits in a specific part of south Minneapolis.
The Southern Minnesota Beet Sugar Cooperative emitted higher levels of hydrogen sulfide than allowed from its Renville facility, resulting in a $1.15 million fine following an MPCA investigation.