California Code, Health and Safety Code - HSC § 114049

(a) In locker rooms.

(b) In toilet rooms.

(c) In dressing rooms.

(d) In refuse rooms.

(e) In mechanical rooms.

(f) Under sewer lines that are not shielded to intercept potential drips.

(g) Under leaking water lines, including leaking automatic fire sprinkler heads, or under lines on which water has condensed.

(h) Under open stairwells.

(i) Under other sources of contamination.