Potable water inlet control and location.
Municipal Code of Chicago § 18-29-606.5.6
in effect18-29-606.5.6 Potable water inlet control and location.
Potable water inlets to gravity tanks shall be controlled by a ball cock or other automatic supply valve to prevent the tank from overflowing. The inlet shall be terminated as to provide an air gap not less than 4 inches (100 mm) above the overflow.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2691680Fetched: 10/24/2026
