Traps underground.
Municipal Code of Chicago § 18-29-1002.1.2
in effect18-29-1002.1.2 Traps underground.
Underground traps shall be provided with accessible and removable clean-outs, except for separate "P" traps into which floor drains, urinals and other fixtures with removable drain strainers discharge.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2692593Fetched: 10/24/2026
