COOPERATIVE FUNDING.

(a) The authority may develop a procedure for funding cooperatively a project of the authority with money from a political subdivision located entirely in the authority, and may develop a procedure for funding cooperatively a project of the authority with money from a political subdivision located wholly or partly outside the authority, a water supply corporation, or other private entity, if the authority project fulfills a governmental purpose of both the authority and the political subdivision, or fulfills a governmental purpose of the authority that the authority determines would be furthered by cooperative funding from a private entity.

(b) A political subdivision may enter into a contract with the authority for the political subdivision to finance a portion of the proposed project with the political subdivision's resources instead of using only the proceeds from bonds of the authority for that purpose. The contract must be executed before the authority issues the bonds. As provided in the contract, the authority may:

(1) reduce the value of the bond issuance to the degree that the political subdivision provides project funding; and

(2) credit the political subdivision for the political subdivision's contribution to the project financing and adjust the allocation of revenue pledged to the payment of the bonds so that the authority avoids using, to a degree reasonably commensurate with the contribution, revenue from the political subdivision to service the authority's bond debt or interest.