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Dredged materials management

Requirements for discharges from a project site and/or management control site(s).

Registered sewage tanks

Septic tanks must be registered in Minnesota to ensure they are watertight and have adequate structural integrity.

Air emissions risk analysis (AERA)

An air emissions risk analysis estimates the potential human health risks from air pollution emitted by a facility.

River and stream biological monitoring

MPCA evaluates water quality by measuring and monitoring the health of fish, macroinvertebrates, and plants.

Going natural for water quality

Removing of an old dam and restoring a creek's curves are improving habitat and water quality in the Pomme de Terre River Watershed.

In Minnesota, certain tasks in the design, installation, repair, maintenance, operation, or inspection of septic systems can only be done by certified individuals. Find out what training, experience, and exams are required to fulfill the requirements for certification.

Air quality alert issued due to wildfire smoke until Monday, July 14, for all of Minnesota

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for all of Minnesota. The alert takes runs until 9 a.m. on Monday, July 14. Air quality is expected to reach the purple AQI category in northernMinnesota, which is very unhealthy for everyone.

Summer is ozone season

Hot, sunny weather brings the possibility of air quality alerts due to ozone. But what exactly is ozone?

Carbon monoxide

Carbon monoxide (CO) is a product of the incomplete combustion of carbon-based fuels—including gasoline, diesel fuel, crude oil, and wood—and other natural and synthetic products. Breathing in…

Blue Earth County and Mathiowetz Construction Company fined more than $35,000 for stormwater violations from sediment discharge into the Blue Earth River

MPCA investigation determined that construction sediment was discharged into the Blue Earth River and a county ditch.

MPCA meteorologists predict summer 2026 air quality, highlight impact of drought, wildfire smoke, and ozone

State experts anticipate an active summer for air quality alerts with recurring ozone and wildfire smoke events

Saint Paul-based company fined $17,938 for improperly disposing of asbestos

Nottingham Construction failed to notify the MPCA that it was demolishing a property in Mahtomedi that contained asbestos and failed to send the asbestos demolition debris to a permitted facility.

Jordan construction company fined $13,000 for construction stormwater permit violations

S.M. Hentges & Sons, a Jordan-based construction company, paid $13,078 for construction stormwater violations for a project in Chaska.

Cold Spring Brewing Company has paid more than $15,000 in fines for stormwater violations

MPCA investigation in May 2024 found violations related to stormwater at three facilities.

Renville beet processing facility fined $1.15 million for excess hydrogen sulfide emissions

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.

Climate impacts on agriculture

Warming temperatures and increased rains caused by climate change continue to have real impacts on farms across Minnesota. Our agriculture industry will also play an important role in reducing the amount climate change causing pollution we produce as a state.