California Code of Regulations
Title 25 - Housing and Community Development
Division 1 - Housing and Community Development
Chapter 2 - Mobilehome Parks and Installations
Article 5 - Plumbing Requirements
Section 1264 - Wet Vented Systems

Universal Citation: 25 CA Code of Regs 1264

Current through Register 2024 Notice Reg. No. 38, September 20, 2024

(a) In lieu of the individual vents, the park drainage system may be wet vented by means of a combination drain, waste, and vent system. Wet vented systems in which the trap for one or more lots is not individually vented shall be of sufficient size and provided with an adequate vent or vents to assure free circulation of air. Wet vented drainage systems may be permitted only when each such system conforms to Table 1268-1 and Table 1268-2 and all of the following requirements for such systems:

(1) A wet vented drainage system shall have a terminal vent installed not more than fifteen (15) feet downstream from the uppermost trap on any branch line and shall be relief vented at intervals of not more than one hundred (100) feet or portion thereof.

(2) Wet vented drainage laterals shall be not more than six (6) feet in length for three (3)-inch diameter pipe and not more than fifteen (15) feet in length for four (4)-inch diameter pipe.

(3) No vertical drain pipe shall be permitted in any wet vented drainage system, except the tail pipe of the trap or riser of the drain inlet. Tail pipes shall be as short as possible, and in no case shall exceed two (2) feet in length.

1. Repealer of subsections (d) and (e) filed 8-22-85; effective upon filing pursuant to Government Code Section 11346.2(d) (Register 85, No. 36).
2. Amendment filed 7-6-2004; operative 7-6-2004 pursuant to Government Code section 11343.4 (Register 2004, No. 28).

Note: Authority cited: Sections 18300 and 18630, Health and Safety Code. Reference: Section 18630, Health and Safety Code.

Disclaimer: These regulations may not be the most recent version. California may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.