Utilities. All utilities serving the structure shall be installed underground at expense to the applicant. Connections to all utilities shall also be made at expense to the applicant, and applicant shall reimburse the Township for all costs, charges, expenses and the like arising from or occasioned by such utility connection or use. Water sources and distribution systems shall be approved by the appropriate Township authorities so as to ensure the adequacy, quality and sufficiency for fire-fighting purposes. The builder shall install, at his expense, fire alarm boxes as required and as approved by the Fire Department. The placement and number of fire hydrants shall be subject to the approval of the Fire Department. No certificate of occupancy shall be issued for any development unless and until the Township Engineer certifies that "as-built" drawings, certified by a licensed professional engineer, showing the precise location of all underground utilities, manholes, valves, tap ins, and appurtenances thereto, have been filed in his office. After certification by the Township Engineer, the "as-built" drawings shall be permanently filed with the office of the Secretary of the Planning Board.