Section 12
SEC. 12. The grantee herein shall not, without the approval of the Congress of the Philippines first had, lease, grant, sell, convey or give in usufruct this franchise and the property and rights acquired thereunder to any person corporation: Provided, That for the purpose of such lease grant, sale, conveyance, or giving in usufruct, it shall be necessary to file in the office of the Secretary Public Works and Communications an agreement in writing by which the person or corporation in whose favor such lease, grant, sale, conveyance, or giving in usufruct is made shall bind himself to comply with all existing terms and conditions: Provided, further, That in case of any national emergency affecting and endangering the public safety and order, the Government of the Philippines shall have the right to take possession of the water supply system as provided in this Act, and operate the same until such emergency shall have passed.