California Code
ARTICLE 3 - Mobile Water and Wastewater Tanks
Section 114209.

114209. Potable water tanks and wastewater tanks shall be sloped to an outlet that ensures complete drainage of the tank and designed and constructed so as to be easily and completely drained.

(Added by Stats. 2006, Ch. 23, Sec. 2. Effective January 1, 2007. Operative July 1, 2007, by Sec. 3 of Ch. 23.)