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Under the federal Clean Water Act, states must designate beneficial uses for all waters and develop water quality standards to protect each use.

Testing found elevated levels of tetrachloroethylene/perchloroethylene (PCE or Perc) in soil vapors around the Dison’s Cleaners and Launderers site in Rochester.

Elevated levels of tetrachloroethylene and trichloroethylene have been found in soil vapor around this site in St. Paul.

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

Certain types of permits and approvals to conduct solid waste activities require a notification to the MPCA of the intent to perform the specified solid waste activity.

Enbridge Energy is continuing restoration work around its new Line 3 crude oil pipeline across Minnesota. The new line replaces an aging Line 3 and began operating in October 2021, after Enbridge completed the project’s construction phase.

Increasing organics collection and processing infrastructure is necessary to meet statewide recycling goals

Learn what a brownfield is, how it can negatively affect communities, and resources for cleaning one up.

SSTS staff contact information and areas of responsibility.

As part of our commitment to continuous improvement, transparency, certainty, and customer service, the MPCA is improving the way we track and administer permits. These efforts are part of periodical…

Groundwater is not a static thing, but moves around in the layers of rock and soil beneath our feet. How does this affect the work to treat contaminated groundwater and protect drinking water?

The health of Minnesota's large rivers is a reflection of how well we are protecting overall water quality.

The MPCA has developed guidance on a number of topics to assist real estate developers, environmental engineers, remediation consultants, and others in addressing brownfields and contaminated sites.

The MPCA has withdrawn proposed rules relating to waste treated seeds.

MPCA keeps its public data easily accessible for convenient use.

The Minnesota Pollution Control Agency (MPCA) requests public comment on a rule that will shape nation-leading restrictions on the use of per- and polyfluoroalkyl substances (PFAS).

The MPCA is planning new rules governing air quality. The main purpose is to adopt new rules to implement and govern regulation of facilities that emit air toxics.

Status of total maximum daily load (TMDL) projects in Minnesota.

Details on sampling and monitoring requirements of your industrial stormwater permit.

State agencies, counties, municipalities, nonprofit organizations, and many others are engaged in protecting Minnesota lakes.