25 Pa. Code § 109.716
(a) A public water system that uses chloramines or purchases water that contains chloramines shall develop a nitrification control plan by April 29, 2019. The plan must conform to the guidelines in industry standards such as the American Water Works Association’s M56 Manual on Nitrification and contain at least the following information:
(1) A system-specific monitoring plan that includes, at a minimum:
The provisions of this § 109.716 issued under section 4 of the Pennsylvania Safe Drinking Water Act (35 P.S. § 721.4); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).
The provisions of this § 109.716 adopted April 27, 2018, effective April 28, 2018, 48 Pa.B. 2509.