No acquisition of water rights from a source of supply by any public water supply agency shall be effective to prevent the acquisition of water rights from such source of supply in the future under the terms of this act, unless, within one year after the effective date of this act, the public water supply agency shall have produced to the board the record upon which such acquisition is founded or a statement of the facts relied upon to show that such acquisition has been lawfully accomplished, and shall have filed in the office of the board, duly certified and acknowledged, transcripts of corporate or other action or proceeding, or statement of facts or records relied upon as the basis of a claim of acquisition of water rights, and a sworn statement of an estimate of the amount of water reasonably necessary from said source of water supply for present purposes and future needs, and also such other or additional information as the board may deem necessary: Provided, That prior compliance with the provisions of the Act of 1937, Pamphlet Laws 258, Number 64,¹ by any public water supply agency shall be deemed to be a full meeting of the requirements of this section of this act.