Wis. Admin. Code Department of Natural Resources NR 206.01
The purpose of this chapter is to establish effluent limitations and monitoring requirements to be used in permits for discharges of wastewaters from publicly owned treatment works and privately owned domestic wastewater treatment works to land disposal systems. Section 283.31, Stats., requires a permit for the lawful discharge of any pollutant into the waters of the state. Section 283.01(13), Stats., defines "waters of the state" as including groundwater. Consequently, permits are required for the type of discharges to which this chapter applies. It is the intent of the department through this chapter to restore and maintain the physical, chemical and biological integrity of the groundwater of the state and to encourage the protection of this resource, and to achieve compliance with ch. NR 140.
Wis. Admin. Code Department of Natural Resources NR 206.01