Minn. Stat. § 458D.20
The board may contract with the United States or any agency thereof, any state or any agency thereof, or any municipal or public corporation, governmental subdivision or agency or political subdivision in any state, outside the jurisdiction of the board, for furnishing to such entities any services which the board may furnish to local government units in the district under sections 458D.01 to 458D.24, including but not limited to planning for and the acquisition, betterment, operation, administration and maintenance of any or all interceptors, treatment works and local sanitary sewer facilities, provided that the board may further include as one of the terms of the contract that such entity also pay to the board such amount as may be agreed upon as a reasonable estimate of the proportionate share properly allocable to the entity of costs of acquisition, betterment and debt service previously allocated to local government units in the district. When such payments are made by such entities to the board, they shall be applied in reduction of the total amount of costs thereafter allocated to each local government unit in the district, on such equitable basis as the board deems to be in the best interests of the district, applying so far as practicable and appropriate the criteria set forth in section 458D.09, subdivision 2. Any municipality in the state of Minnesota may enter into such contract and perform all acts and things required as a condition or consideration therefor consistent with the purposes of sections 458D.01 to 458D.24, whether or not included among the powers otherwise granted to such municipality by law or charter.
Minn. Stat. § 458D.20
1971 c 478 s 19