34 Pa. Code § 41.181 – Water supply and accessories.

(a) The use of the common drinking cup and the common towel is prohibited. All camp cars or trailers shall be equipped with a suitable drinking water container, a suitable container for individual paper cups, washbasins and showers with hot and cold running water, and an adequate supply of toilet paper, paper towels, and paper cups.
(b) Section 41.161 (relating to water supply) applies to camp cars and trailers, including camp cars and trailers used for sleeping purposes.