Effective Mar 23, 202347 Ill. Reg. 4415AUTHORITY: Implementing Section 13 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/13 and 27].POLLUTION CONTROL BOARD
"Whole Effluent Toxicity" or "WET" means a test procedure that determines the effect of an effluent on aquatic life.
(Source: Amended at 47 Ill. Reg. 4415, effective March 23, 2023)