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Improving water quality in Lake George has required treating phosphorus in the water and filtering pollutants out of urban stormwater.

Increased rainfall from climate change damages river water quality, which in turn damages fishing and recreation.

Minnesota rivers are shrinking in the drought; some have their lowest flows in decades. What will be the long term effects?

The U.S. EPA approved Minnesota's Statewide Mercury Total Maximum Daily Load study in March 2007.

Study funded by the $850 million settlement that Minnesota reached with 3M in 2018  focused on the area served by the Valley Branch Watershed District’s Project 1007 rainwater conveyance system in the East Metro.

New reports from the MPCA highlight restoration investments and improved water quality while calling for continued work to address persistent challenges in southeastern Minnesota.

Find out what’s being done in Minnesota’s watersheds to protect and improve water quality.

MPCA and the Minnesota Department of Health continue to sample private residential wells, municipal wells, and non-community public wells (e.g., small businesses, churches, schools) in the East Metro area for per- and polyfluoroalkyl substances (PFAS)

The MPCA has a variety of educational displays, programs, and materials about chloride pollution. We encourage our partners to utilize these resources to engage with their community.

Thanks to years of restoration efforts, the MPCA confirmed the Kabekona River meets water quality standards for recreation and proposed its removal from the 2026 impaired waters list.

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 MPCA monitors water quality in rivers and streams is several different ways around the state.

Volunteer-collected data are regularly used in decision-making and conservation efforts. Find a program that excites you and join in.

A project to address excess sediment and turbidity in the Mississippi River, from Fort Snelling at St. Paul to upper Lake Pepin at Red Wing, based on a site-specific standard developed by the MPCA and Wisconsin Department of Natural Resources.

The Minnesota Nutrient Reduction Strategy (NRS) compiles the latest science, research, and data and recommends the most effective strategies to reduce nutrients in our waters from both point and nonpoint sources.

Minnesota’s Continuous Nitrate Sensor Network generates publicly available water quality data on nitrate levels in our surface water.

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

This Winnebago River consists of a stream and lake system in southern Minnesota that flows into Iowa. The water resources here face several water quality challenges, including high nutrient and bacteria levels.

Keep It Clean focuses on the growing problem of garbage and human waste left on the ice by anglers and other visitors during ice fishing season.

Finding ways to keep stormwater on land and let it soak into the ground can lessen the negative effects on water quality from stormwater.