25 Pa. Code § 109.4
Public water suppliers shall:
The provisions of this § 109.4 adopted December 7, 1984, effective December 8, 1984, 14 Pa.B. 4479; amended May 15, 1992, effective May 16, 1992, 22 Pa.B. 2621. Immediately preceding text appears at serial pages (139067) to (139068).
This section cited in 25 Pa. Code § 109.705 (relating to system evaluations and assessments).