10 Guam Code Ann. § 47106
(b) It shall be unlawful for any person to construct, install or operate a new sewage conveyance system, disposal systems, or treatment works, extensions, modifications or additions to factories, manufacturing establish- ments or business enterprises, the operation of which could cause a substantial increase in waste discharges to the waters of the territory or otherwise substantially alter the physical, chemical or biological properties of the waters of the territory, or to make or cause to be made any new outlet for the discharge of sewage, industrial waste or other wastes into any sewage conveyance system or into the waters of this territory without first securing such permit as the Administrator may require, including the submission of plans and specifications and such other information as he deems relevant in connection with the issuance of such permits.
(c) No permit shall be issued under this Section for any use in violation of Water Quality Standards adopted under this Act.