Wilmette Harbor swimmers, Glencoe Beach families and every North Shore household that draws drinking water from Lake Michigan got a new layer of protection on Friday, Aug. 7, when Gov. JB Pritzker signed a law requiring Illinois industries to keep plastic pellets out of the lake.
House Bill 4418, championed by state Sen. Julie Morrison (D-Lake Forest), designates pre-production plastic pellets as a pollutant in Illinois law for the first time. Illinois is now the first Great Lakes state to hold manufacturers and transporters of the tiny raw-material beads accountable for spills into waterways, according to the Illinois Environmental Protection Agency.
The pellets, sometimes called "nurdles," are the building blocks of plastics manufacturing. They escape into stormwater runoff from factories and during transport between facilities, eventually reaching rivers and the lake.
How much plastic is in the lake?
A 2016 Rochester Institute of Technology study found roughly 11 million pounds of plastic debris enter Lake Michigan every year, about half of the 22 million pounds dumped across all five Great Lakes annually. Researchers described that volume as equivalent to 100 Olympic-sized swimming pools full of plastic bottles. The study, now a decade old, remains the most widely cited baseline for Great Lakes plastic pollution.
The IEPA noted that 86% of litter collected on Great Lakes beaches is plastic, and a recent report cited by the agency found microplastics in 100% of tested Illinois waterways.
What the law requires
Under HB 4418, any industrial facility that manufactures, processes, packages or transports plastic pellets must develop a stormwater pollution prevention plan to keep pellets out of waterways. The IEPA has one year from the law's Jan. 1, 2027, effective date to develop and begin implementing those requirements.
"This new law ensures that manufacturers and transporters take responsibility for preventing these pellets from entering our waterways in the first place," Morrison said in a statement released with the bill signing. "Illinois is setting a strong example for the Great Lakes region by putting practical protections in place that will help keep our drinking water cleaner, protect wildlife, and reduce plastic pollution at its source."
State Rep. Joyce Mason was the bill's chief House sponsor. The Alliance for the Great Lakes, an environmental advocacy group, praised the measure.
What's next
The law takes effect Jan. 1, 2027. The IEPA has not announced a rulemaking timeline or public hearing schedule for the stormwater prevention requirements it must write. No Wilmette Park District, Glencoe Park District or other North Shore municipal officials have commented publicly on the new law.
Pritzker signed HB 4418 as part of a three-bill environmental package he framed as insulating Illinois from federal environmental rollbacks under the Trump administration.
