The WPWMA is a regional agency established in 1978 through a joint exercise of powers agreement between Placer County and the cities of Lincoln, Rocklin and Roseville (member agencies). The WPWMA’s facilities consist of the Western Regional Sanitary Landfill and a Materials Recovery Facility, including composting, household hazardous waste and recycling buyback facilities. For more information visit WPWMA.ca.gov and RenewablePlacer.com.