Miss. Code Ann. § 51-35-347: Miss. Code Ann. § 51-35-347

The district shall have authority to act jointly with political subdivisions of the state, its agencies, and commissions and instrumentalities thereof, with other states, with municipalities, with the United States of America, and agencies, departments, and instrumentalities thereof, in the performance of the purposes and services authorized in this article, upon such terms as may be agreed upon by the directors.