85-6-108. Exemption from payment of fees. Any water users' association organized in conformity with the requirements of the laws of the United States and of the state of Montana, under the Reclamation Act of June 17, 1902, which, under the articles of incorporation, is authorized to furnish water only to its stockholders shall be exempt from the payment of any license fee and from the payment of any annual license tax and, upon filing its articles of incorporation with the secretary of state, shall be required to pay only a fee of $40 for the filing and recording of such articles of incorporation and the issuance of certificate of incorporation.