The city has leased its water, sewer and sanitation systems to the Poteau public works authority, a public trust. The trust has power to set rates and otherwise to regulate the water, sewer, and sanitation systems. The motions and resolutions adopted by the trust replaced any ordinances which the city had relating to these matters. For the motions and resolutions passed by the public trust, reference should be made to the minutes of the Poteau public works authority. A copy of the trust indenture relating to the leasing of these systems is on file in the office of the city clerk. (1990 Code § 17-101)