Miss. Code Ann. § 51-9-195

Payments by any public agency for water supplies from the waterworks or water supply system owned or operated by the district shall be made from the gross receipts or revenues of the public agency’s waterworks, water supply system, or of its combined waterworks, water supply, sewerage and sewage disposal systems, as may be prescribed in the contract between the public agency and the district, its successors or assigns, or as otherwise authorized by law. Such payments shall constitute an operating expense of the system or systems whose revenues are thus to be applied. No provision of this act shall be construed to prohibit any public agency, otherwise permitted by law to issue bonds, from issuing bonds in the manner provided by law for the construction, renovation, repair or development of waterworks or a water supply system or any part thereof owned or operated by such public agency. Payments made or to be made to the district pursuant to any contract authorized by this act shall not be subject to approval or review by the Mississippi Public Service Commission.