AUTHORITY: Implementing Section 17 and authorized by Section 27 of the Illinois Environmental Protection Act [415 ILCS 5/17 and 27].POLLUTION CONTROL BOARD
a) No cross connection is allowed between water plant piping and any drain or sewer. Backflow prevention installed within the water treatment facility must comply with the Illinois Plumbing Code (77 Ill. Adm. Code 890).
b) No cross connection is allowed whereby an unsafe substance may enter a community water supply.
c) No cross connection is allowed between any portion of a community water supply distribution system and any other water supply that is not a community water supply.