Okla. Stat. tit. 11, § 11-37-119: Contracts for water - Provision for modification of

rates - Outside users subject to rationing program of municipality.

A. All contracts for the sale or furnishing of water from a

source obtained by or on behalf of a municipality by permit or prior

right under state law or by general obligation bonds shall be made

in the name of the municipality as provided for by statute or by

charter.

B. All such water sold and furnished to persons or public or

private entities outside the corporate limits of the municipality

shall be sold and furnished upon written contracts which shall

provide for an annual review of the municipality's costs and

contract modification of rates to permit rates to be increased or

decreased to the purchasers as appropriate. Any modification shall

be nondiscriminatorily allocated between the municipality's

customers and the purchaser. Provided, however, that only those

costs that are attributable to maintaining the ability of the

municipality to provide water service to the purchaser shall be

included in purchaser's rates.

The contracts shall provide that the persons or public or

private entities outside the corporate limits of the municipality

shall be subject to a rationing program consistent with any

rationing program ordered by the municipality.