It is the purpose of Kan. Stat. Ann. §§ 19-3545 to 19-3556, inclusive, and amendments thereto, to permit certain public agencies to make the most efficient use of their powers relating to public water supplies by enabling them to cooperate with other public agencies on a basis of mutual advantage and thereby to provide services and facilities to wholesale water to participating public agencies and to provide for the establishment for such purpose of a quasi-municipal corporation which shall be known as a public wholesale water supply district. The function of the public wholesale water supply district shall be to:

(a) Secure a source of water on a scale larger than is feasible for public water supply districts, municipalities, publicly and privately owned water distribution companies, acting alone;

(b) sell such water at wholesale to public water supply districts, municipalities, and publicly and privately owned water distribution companies; and

(c) provide services, pursuant to contract, to participating public agencies of the district, except that, if the contract amount for such services is $10,000 or more, the district shall be authorized to provide such services only if the award of the contract is based on competitive bids.