The Northwest Indiana Storm Water Advisory Group, also known as NISWAG is a coalition of municipal separate storm sewer system (MS4) entities providing leadership in the protection and enhancement of storm water resources within Lake and Porter Counties. As a volunteer group, all participants will network and share strategies to implement storm water quality practices to reduce storm water pollution and work collectively to meet state and federal regulations.

The Town of Chesterton's MS4 Coordinator participates regularly in the group.

Visit their website.