Document: Draft of modified S. 75, 1/27/65 (carbon copy), page 7may require as a condition in any contract under which water is provided under the Central Arizona Unit that the contractor agree to accept mainstream water in exchange for or in replacement of existing supplies from sources other than the mainstream but no such exchange or replacement shall require a contractor to bear any cost of said exchange or replacement water in excess of the costs that would have been incurred in connection with the continued use by the contractor of its existing supply, nor shall such exchange or replacement otherwise result in economic injury to the contractor. Article II(B)(3) of the Decree of the United States Supreme Court in Arizona v. Californ...