(a) General rule.--Pursuant to 53 Pa.C.S. Ch. 23 Subch. A (relating to intergovernmental cooperation), boroughs may contract with other municipal corporations providing for the joint construction or maintenance of sanitary sewer systems and for the joint construction onto existing sanitary sewer systems. The agreement shall provide for the apportionment of costs among the municipal corporations. The council may assess the borough's respective portion of the costs, as may be legally assessable, upon property benefited by the facilities pursuant to Chapter 21A (relating to assessments and charges for public improvements). Any portion of the cost not assessed or assessable shall be paid by the respective municipal corporations under the agreement.

(b) Composition of joint sanitary sewer board.--

(1) The municipal corporations joining or contemplating joining in any improvement, in order to facilitate the building of the sanitary sewer system and in securing preliminary surveys and estimates, may, by ordinance, provide for the appointment of a joint sanitary sewer board composed of one representative from each of the municipal corporations joining. The board shall act as the advisory and administrative agency in the construction of the improvement and its subsequent operation and maintenance.

(2) Members of the joint sanitary sewer board shall serve for terms of six years each from the dates of their respective appointments and until their successors are appointed. The joint sanitary sewer board shall organize by the election of a chair, secretary and treasurer. The secretary and treasurer may be the same person.

(3) The municipal corporations may, in the ordinances creating the joint sanitary sewer board, authorize the board to appoint an engineer, a solicitor and other assistants as are deemed necessary and agree to the share of the compensation of those persons each municipal corporation is to pay.

(4) The members of the joint sanitary sewer board shall receive compensation for attending board meetings as established in the budget that is prepared by the joint sanitary sewer board and submitted to and adopted by the municipal corporations. The members shall be entitled to actual expenses to be paid by the respective municipal corporations the members represent.

(c) Powers of the joint sanitary sewer board.--

(1) The joint sanitary sewer board may adopt rules and regulations consistent with the requirements of this part to govern its proceedings and shall prepare and suggest any practical measures and plans by which the joint improvement may be carried to successful completion and plan the future development of the system, so as to conform to a general plan.

(2) The joint sanitary sewer board may prepare a joint agreement or agreements for submission to and adoption by the municipal corporations defining the advisory and administrative powers of the joint sanitary sewer board and setting forth the following:

(i) Consents of the municipal corporations to the proposed improvement.

(ii) The manner in which preliminary and final plans, specifications and estimates for the proposed improvement shall be prepared and adopted.

(iii) How proposals for bids shall be advertised and contracts awarded.

(iv) The manner in which the costs of the improvement and other incidental and preliminary expenses in connection with the improvement and the future cost of operation and maintenance shall be equitably shared, apportioned and paid.

(v) All other matters, including the preparation and submission of annual and other budgets, as may be deemed necessary or required by law to complete the proposed improvement and to assure future maintenance and operation thereof.

(3) The joint sanitary sewer board may not make any improvement or spend any public money which has not first been authorized by all of the municipal corporations proceeding with the improvement.

(d) Eminent domain.--

(1) When it is necessary to acquire, appropriate, injure or destroy private property to build a joint sanitary sewer system or improvement and the property cannot be acquired by purchase or gift, the right of eminent domain shall vest in the municipal corporation where the property is located.

(2) When it is necessary to acquire, injure or destroy property in any territory not within the limits of any of the municipal corporations joining in the improvement, the right of eminent domain shall be vested in the municipal corporation adjacent to the territory where the property is located subject to 26 Pa.C.S. § 206 (relating to extraterritorial takings).

(3) Damages for any property taken, injured or destroyed shall be assessed under laws relating to the municipal corporation exercising the right of eminent domain and shall be paid by the municipal corporations joining in the same proportion as other costs of the improvements.

(e) Indebtedness.--Each of the boroughs joining in the improvement shall have power to incur or increase its indebtedness, not exceeding the constitutional limits, for the purpose of paying its share or portion of the cost of the improvement in the manner now provided by law for the incurring of indebtedness.