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Waste connection.

Municipal Code of Chicago § 18-29-406.2
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18-29-406.2 Waste connection. The waste from an automatic clothes washer shall discharge through an air break into a standpipe in accordance with Section 18-29-802. The trap and fixture drain for an automatic clothes washer shall be not less than 2 inches (51 mm) in diameter. The fixture drain for the standpipe serving an automatic clothes washer shall connect to a 2-inch (51 mm) or larger diameter fixture branch or stack. Automatic clothes washers that discharge by gravity shall be permitted to drain to an approved trench drain. Exception: In Group R occupancies, waste from a domestic automatic clothes washer shall be allowed to discharge through an air break into a laundry sink if the condition existed before June 1, 2026. (Amend Coun. J. 10-14-21, p. 37722, Art. IV, § 12; Amend Coun. J. 12-14-22, p. 58278, Art. VI, § 4; Amend Coun. J. 6-17-26, p. 45214, Art. IV, § 48)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2691034Fetched: 10/24/2026

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18-29-406.2 | Corpus