data californiaCDPH-Wastewater Surveillance Data, California The California Department of Public Health (CDPH) is coordinating with wastewater utilities, local health departments, academic researchers, and laboratories in California on...Welcome to the Statewide Database, California's redistricting database. We are responsible for collecting and processing data for California's decennial redistricting. In 2001, 2011 and 2021, these data were used for Assembly,