This Act makes amendments in section 2 of the principal Act by inserting new definitions, such as of groundwater and water resources. It amends section 5 regarding the functions of the Authority; section 9 regarding the appointment of Chief Executive Officer; section 14 regarding the powers of Authority; section 26 regarding the directions of Minister; and section 27 regarding water zones and areas of public water supply. Part IVA on Water and Wells Management Committee, new Second Schedule and section 33 on the relevance to administration of Planning and Development Act of 2019 in respect of water protection zones are inserted into the Principal Act.