34 Pa. Code § 6.33 – Sanitation.

(a) Sanitary closets. Approved sanitary chemical or water closets shall be provided during building operations and shall be so located that workmen are not obliged to walk more than three stories, either up or down, to reach them. Approved sanitary closets shall be provided in accordance with the following ratio, and for each additional 50 persons employed, or fractional part thereof, at least one additional closet shall be provided:
Number of Persons Number of Closets
1—15 1
15—30 2
30—60 3
60—100 4
100—150 5
(b) Special conditions. Where the ratio specified in subsection (a) does not provide a sufficient number of chemical or water closets to permit them to be located as required, additional closets shall be provided.
(c) Approval. When chemical closets are provided they shall be of a type approved by the Board, equipped with agitators and maintained with chemicals of ascertained efficiency.
(d) Protection. All toilet facilities shall be properly protected from weather conditions and screened from public view.
(e) Drinking water. Pure and wholesome drinking water of a quality approved by the Department of Health of the Commonwealth shall be supplied at all times in places accessible to employes.