Any sanitary district formed hereunder shall have the right to permit territory lying outside its limits, whether within any other sanitary district or not, to drain into and use any channel or drain made by it, upon such payments, terms and conditions as may be mutually agreed upon, and any sanitary district formed hereunder is hereby given full power and authority to contract for the right to use any drain or channel which may be made by any other sanitary district, upon such terms as may be mutually agreed upon, and to raise the money called for by any such contract in the same way and to the same extent as such district is authorized to raise money for any other corporate purposes.