Seal.
Municipal Code of Chicago § 18-29-715.4
in effect18-29-715.4 Seal.
Backwater valves shall be so constructed as to provide a mechanical seal against backflow.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2692314Fetched: 10/24/2026
