28 Pa. Code § 18.22
Water shall be introduced to and withdrawn from the pool in a manner that provides uniform circulation and uniform disinfectant residual throughout the entire pool.
The provisions of this § 18.22 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).