23.—(1) Any authorisation granted by the Department under regulation 18 and Schedule 4 Part 1 paragraph 3 of the 2009 Regulations and which has not been revoked or expired by 27 October 2017 shall have effect as if granted under regulation 18 and Schedule 4 Part 1 paragraph 3(1) of these Regulations.
(2) Any notice served by the Department under regulation 19 of the 2009 Regulations and which has not been revoked or expired by 27 October 2017 shall have effect as if granted under regulation 19 of these Regulations.
24. The Private Water Supplies Regulations (Northern Ireland) 2009 M1, the Private Water Supplies (Amendment) Regulations (Northern Ireland) 2010 M2, and the Private Water Supplies (Amendment) Regulations (Northern Ireland) 2015 M3 are revoked.