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The MPCA's chloride reduction program assists communities and organizations across Minnesota in identifying sources of chloride.

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

Elk River Landfill, Inc. proposes a northward expansion of its landfill into Livonia Township.

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

Environmental information and permits that affect businesses that paint, coat, or strip surfaces.

A cumulative impacts analysis provides a comprehensive look at all burdens that affect a community or neighborhood.

If you're new to the septic system world at the county level, or even if you've been in the job for a while, MPCA offers videos and companion documents to provide valuable background and insights.

Cleanup and recovery from a natural disaster depends on local units of government to guide and direct residents to ensure the effective and efficient disposal of wastes in accordance with statutes, rules, and guidelines.

MPCA's recommended review criteria for wastewater treatment facilities that need to perform system maintenance that requires approval to bypass untreated or partially treated domestic wastewater.

Resources and best management practices to help protect water quality on construction sites.

Question and answer session with Lisa Weidemann, a community affairs specialist with the MPCA, about her work with the agency.

The MPCA has adopted amended rules relating to when maintenance of a closed landfill should end.

MPCA plans to amend existing Minnesota Rules governing permits and solid waste landfills (chapters 7001 and 7035).

The Clean Water Act established the framework for creating water quality standards and continues to help us protect Minnesota's prized lakes and rivers.

Controlling phosphorus is an important part of protecting Minnesota waters.

The MPCA is developing a sulfate multi-discharger variance (MDV) for wastewater facilities that are currently unable to meet the state water quality standard for sulfate.

Minnesota is a national leader in keeping mercury out of the environment.

MPCA's environmental review process for feedlots operates according to the rules of the Environmental Quality Board.

Excess nitrate remains a long-term challenge to manage. In our lakes, rivers, and streams, it is toxic to fish and other aquatic life. In drinking water, it can pose a risk to human health,…

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.