A ban on Styrofoam food and drink containers is set to go into effect in the District of Columbia.

Media outlets report that the ban on Styrofoam begins Friday. The D.C. Council and then-mayor Vincent C. Gray passed the law in 2014 as part of a set of environmental initiatives that also includes requiring businesses to use compostable disposable dining products by 2017. Gray said the ban would improve the health of the Anacostia River.

Officials with the Department of Energy and Environment will launch undercover spot checks to ensure no businesses use the foam containers. Establishments not in compliance will be issued a warning and given 30 days to follow the new law. A business still using the containers after 30 days will be fined $100.