EPA Administrator Scott Pruitt put the spotlight on three more Superfund sites to accelerate cleanup efforts after the agency targeted those sites for a lack of progress.

The Environmental Protection Agency named the sites in California, Delaware, and Minnesota April 16 after the agency’s regional staff said they needed a push from the administrator, Albert “Kell” Kelly, Pruitt’s senior adviser on Superfund issues, told Bloomberg Environment.

Kelly expects that push to come in the form of an expedited cleanup...