28 Pa. Code § 18.24
The turnover period for wading pools may not be longer than 2 hours, and the turnover period for other types of pools may not be longer than 8 hours.
The provisions of this § 18.24 adopted September 18, 1971, effective September 18, 1971, 1 Pa.B. 1921.
This section cited in 28 Pa. Code § 18.23 (relating to recirculation and filtration).