Section 3
SEC. 3. The provincial treasurer of the province or the municipal treasurer of the municipality wherein a water-works system under this Act is constructed shall be in charge of the collection of the water charges and with the approval of the Secretary of Public Works and Communications, he shall appoint duly bonded collectors at salaries which shall be chargeable to waterworks collections or receipts. After deducting the expenses for the maintenance and operation of a system, including the salaries of the necessary personnel, the provincial or the municipal treasurer, as the case may be, shall turn over the balance of collections to the Treasurer of the Philippines to be applied as annual reimbursement of the sum or sums invested from the revolving fund herein created, including interest of four per centum per annum,: Provided, That if the collections turned over to the Treasurer of the Philippines, in any year, are not sufficient to cover the amount corresponding to that year for the reimbursement of the sum or sums invested from the revolving fund and interest of four per centum per annum, the provincial board, municipal council or councils concerned shall appropriate the necessary funds to cover the deficiency. The annual reimbursement and interest paid shall form part of the revolving fund herein created and shall be available for investment in the construction of other waterworks systems under this Act.