The governing authority of any gravity drainage district, or gravity sub-drainage district, may contract with the owner of any drainage or other works for the privilege of using the works in connection with the drainage works of the district, or sub-district.  The governing authority of any gravity drainage district, or gravity sub-drainage district may purchase, or expropriate, from the owner of any drainage, or other works, the title to the works and pay to the owner in cash therefor the amount agreed upon, or fixed in the judgment or expropriation.