Great Lakes
Containing nearly 20% of the earth’s fresh water, the Great Lakes represent the largest freshwater system in the world.

GREAT LAKES
The Great Lakes is the largest freshwater ecosystem on Earth

infrastructure
Illinois's water resources face many infrastructure challenges

nutrient pollution
Nitrogen & phosphorus pollution degrade our water

drinking water
Lead in drinking water threatens many IL communities
Threats To the Great Lakes
Current Great Lakes Laws
The primary federal law governing water pollution, with the objective of restoring and maintaining the chemical, physical, and biological integrity of the nation’s waters by preventing pollution, providing for the improvement of wastewater treatment, and maintaining the integrity of wetlands. Under the CWA, states have the “primary responsibilities and rights” to achieve the Act’s objectives.
With regards to point sources of water pollution discharges, the EPA determines discharge levels, issues and enforces permits, oversees a state’s program administration, and will take over if it determines that the state is underperforming.
The EPA establishes criteria for water quality, which is presumptively binding on states, each of which may establish designated water uses as long as the use doesn’t interfere with the attainment of downstream water quality.
The rule more precisely defines and predictably determines the scope of “waters of the United States” protected under the Clean Water Act. It clearly protects the streams and wetlands that form the foundation of the nation’s water resources from pollution and degradation.
Also known as the “Final Water Quality Guidance for the Great Lakes System,” the initiative is a comprehensive plan between the EPA and Great Lakes states to restore the health of the Great Lakes. The initiative includes criteria for states to use when setting water quality standards for 29 pollutants, including bioaccumulative chemicals of concern, and prohibits the use of mixing zones for these toxic chemicals.
The Great Lakes-St. Lawrence River Basin Water Resources Compact is a legally binding interstate compact between Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania and Wisconsin. The compact details how the states will manage the use of the Great Lakes Basin’s water supply and is the means by which each state will implement its commitments under the Great Lakes–St. Lawrence River Basin Sustainable Water Resources Agreement that also includes the Premiers of Ontario and Quebec. The Council of Great Lakes Governors serves as secretariat to the Governors’ Compact Council created by the Compact. Illinois is exempt from certain provisions of the compact pertaining to new or increased withdrawals or diversions from the Great Lakes.
Section 52.5 of the Illinois Environmental Protection Act prohibits the production, manufacture, distribution and sale in Illinois of any personal care product containing plastic particles less than 5 millimeters in size. When consumers use personal care products such as facial scrubs and toothpaste containing microbeads, the beads are rinsed down the drain and into our sewer systems. Because of their small size and buoyancy, microbeads escape treatment by sewage plants and are discharged into rivers, lakes and oceans. These microbeads then absorb toxic chemicals which can be eaten by fish and wildlife.
Clean Water Updates
5 Ways to Plug In To the Legislative Session
The legislative session has started! This guide breaks down how you can advocate for stronger environmental protection in Illinois.
Read More >>Illinois’ 2026 Environmental Legislative Agenda
Explore the environmental movement's legislative agenda, including all of the most important environmental bills this session!
Read More >>The Environmental Impacts of the Illinois Budget (FY2027)
In his 2026 State of the State and Budget address, Governor JB Pritzker unveiled his administration’s proposed state budget for Fiscal Year 2027 (FY27) of...
Read More >>Wild Ones: Building Power at Wild Things
Sergio Vargas represented IEC at the Wild Things Conference in Southern Illinois. He’s energized and optimistic about the state of conservation, knowing we have such...
Read More >>What Illinois Animal are You?
Illinois is home to hundreds of iconic animals. Who are you? Find your birth month to discover more about your critter.
Read More >>Illinois Wetlands Are At Risk As Federal Protections Vanish. Will State Move To Protect Them?
The Environmental Council’s conservation director Lindsay Keeney said despite opposition from the Farm Bureau, some Illinois farmers have expressed support for protections. “Nature-based solutions –...
Read More >>