The PineRiverCag is an EPA-sanctioned Community Advisory Group overseeing cleanup of the Pine River watershed.

Three Superfund sites exist in Saint Louis, Michigan, along with a radioactive site and a non-superfund site containing mercury and vinyl chloride. A $97 million sediment remediation removed over 750,000 cy from a 32-acre area of the river. A $300-500 million cleanup is pending for the former Velsicol chemical plant site comprising 52-acres in the middle of the town of 4,500 people. A $3 million cleanup is taking place at the radioactive site, and a legal action against Velsicol is pending for the fifth dumping site.