25 Pa. Code § 109.3
This chapter applies to each public water system, unless the public water system meets all of the following conditions:
The provisions of this § 109.3 adopted September 2, 1971, effective September 3, 1971, 1 Pa.B. 1804; amended December 7, 1984, effective December 8, 1984, 14 Pa.B. 4479. Immediately preceding text appears at serial page (48003).