Section 310.232  Dilution Prohibited as a Substitute for Treatment

Except where expressly authorized to do so by an applicable categorical pretreatment standard or requirement, no industrial user may increase the use of process water or, in any other way, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with a pretreatment standard or requirement.  The Control Authority may impose mass limitations on industrial users that are using dilution to meet applicable pretreatment standards or in other cases where the imposition of mass limitations is appropriate. 

BOARD NOTE:  Derived from 40 CFR 403.6(d) (2005), as amended at 70 Fed. Reg. 60134 (Oct. 14, 2005).

(Source:  Amended at 30 Ill. Reg. 17847, effective October 26, 2006)