Water heaters equipped with pressure-temperature relief valves shall be maintained with metal piping installed, undiminished in size, extending from the valve outlet to a point outside of the building not more than two feet (60.9 centimeters) nor less than six inches (15.2 centimeters) above the ground and pointing downward.
Cal. Code Regs. Tit. 25, § 834
Note: Authority cited: Sections 17003.5 and 17040, Health and Safety Code. Reference: Section 17040, Health and Safety Code.