Md. Code, Public Utilities § 26–202

(a) The Commission may contract with Howard County and any person to furnish water.

(b) The parties to a contract under this section may determine by agreement the costs, rentals, service charges, or other fees entered into under the contract.

(c) (1) If the Commission and any person who wants water service cannot agree on the reasonableness of the charge for the service, the Public Service Commission may determine the amount of the charge.

(2) The Public Service Commission’s determination is final and binding on all parties concerned.