(a) General rule.--After a community sewage collection or disposal system has been acquired under this subchapter by the borough, the council shall have the power to enlarge the system if it deems it advisable. The cost and expenses of the enlargement may be distributed or assessed in the same manner as if the enlargement was a regular sewer constructed by the borough under other provisions of this part.

(b) Acquisition and ownership.--If a community sewage collection or disposal system is established or constructed within a borough by a private owner or owners and the council is thereafter empowered by ordinance to acquire the ownership of the sewage disposal system, or when the system has been enlarged by the borough, the acquisition and ownership shall be subject to the following provisions:

(1) An agreement shall be considered a valid agreement by the owners of the sewage collection or disposal system and shall be a transfer of ownership to the borough when any of the following enter into an agreement with the borough for the acquisition of the system by the borough:

(i) The person or persons having established or constructed a community sewage collection or disposal system.

(ii) More than one-half of the number of owners of properties which are connected with, have a right to use and are using a community sewage collection or disposal system.

(2) The borough shall operate and maintain any community sewage collection or disposal system acquired and any enlargement or addition thereto for the use of the following:

(i) Persons having acquired from the borough or from the former owner or owners the right to use the system.

(ii) Other owners of property accessible to the system up to the capacity of the community sewage collection or disposal system.

(3) All persons whose property connects with the community sewage collection or disposal system acquired or constructed by the borough shall pay to the borough treasurer a monthly, quarterly, semiannual or annual charge prescribed by a resolution of the council. The amount of the charges shall not be in excess of the estimated amount necessary to maintain and operate the system and to establish a reserve fund sufficient for its future replacement.

(4) All sewer rentals or charges imposed by the council against properties connected with a community sewage collection or disposal system under this section shall constitute liens against the properties and may be collected in the same manner as other sewer charges.

(5) All money received from the sewer charges shall be deposited as a special reserve fund and shall be used only for the payment of the cost of operating and maintaining the community sewage collection or disposal system and the replacement of the collection or disposal system, if necessary and economically desirable. If, at any time after the acquisition or enlargement of the community sewage collection or disposal system, a regular sewer system is made available by the borough for connection with the properties using the community sewage collection or disposal system, the owners of the properties shall be subject to the other provisions of this part relating to sewers, and all money at that time in the reserve fund which was received from charges for the use of that particular community sewage collection or disposal system and which is over and above the amount expended for the operation and maintenance of that particular community sewage collection or disposal system shall be used towards the payment of any sewer assessments charged against the properties under other sections of this part.

(c) Construction.--Nothing in this section may be construed to supersede the requirements of the act of January 24, 1966 (1965 P.L.1535, No.537), known as the Pennsylvania Sewage Facilities Act.