(a)      (1)      If a municipality or the property owners or residents of any locality in the sanitary district desire a water supply or sanitary sewerage system, or part of the system to be constructed in that municipality or locality, and the WSSC decides that it is inexpedient or impracticable at the time to build the system, owing to remoteness from the WSSC's general system or for other reasons, the municipality, property owners, or residents may build and operate the system at their own expense.

            (2)      However, the system shall be constructed under plans and specifications submitted to and approved by the WSSC, and its construction, maintenance, and operation shall be under the supervision and general control of the WSSC.

            (3)      A system or part of a system, a water main, sewer, water purification or sewage disposal plant, or a connection with these facilities may not be constructed, or installed, except as provided in this section.

      (b)      All construction and operating records, including cost records, shall be filed with the WSSC, which may take over the system or a part of the system, the water main, sewer, water purification or sewerage disposal plant, or connection with these facilities, in the same manner as provided in § 3-106 of this subtitle.

      (c)      Subject to the provisions of § 3-101 of this subtitle, the WSSC may extend its water supply or sewerage systems into any area outside of the sanitary district that is contiguous to or in the vicinity of the sanitary district, whenever the property owners of the area agree to the conditions imposed by the WSSC.

      (d)      The powers and authority in this section may not be restricted by any other general, special, or local law, except as specifically provided in this article.