Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems
Subchapter XII - Waste Disposal
Section NR 811.854 - Brine wastes from ion exchange plants

Brine wastes from ion exchange processes may be discharged to a water of the state subject to the requirements under s. NR 811.85 (1) (b). An equalization tank of sufficient size to allow brine discharge over at least a 24-hour period shall be provided. The department may approve a smaller tank or no equalization if the water system facility demonstrates to the department that reduced equalization is unnecessary to prevent toxicity to aquatic life.