1 A disinfectant, such as chlorine, is usually added to the wastewater before it leaves the treatment plant. 2  The disinfectant kills disease-causing organisms in the water. 3  After treatment, the water can be returned to nearby waterways. 4  It can also be used on land for agriculture and other purposes.
Federalism refers to the mixed or compound mode of government, combining a general government (the central or 'federal' government) with regional governments (provincial, state, Land, cantonal, territorial or other sub-unit governments) in a single political system.
cooperative federalism. a concept of federalism in which national, state, and local governments interact cooperatively and collectively to solve common problems, rather than making policies separately but more or less equally (such as the nineteenth century's dual federalism).