The Department of Environmental Quality (DEQ) encourages the use of Biosolids (also known as sewage sludge) to enhance agricultural and silvicultural production in Michigan.  Almost all Biosolids that are recycled via land applied in Michigan are applied at agronomic application rates for crop production on sites regulated by the DEQ.  Biosolids are also used to provide nutrients and soil conditioning in mine reclamation programs, tree farms, and forest lands. 

Biosolids applications are controlled by Residuals Management Programs (RMP's) which are required to be developed by the National Pollutant Discharge Elimination System (NPDES) discharge permit requirements for wastewater treatment facilities, or by a general permit.