The Guam Power Authority (GPA) was created in 1968 as a public corporation and autonomous instrumentality of the Government of Guam. Since that time, the Authority has maintained and expanded the island wide power system on Guam. The Authority has 469 megawatts of generation capacity, 663 miles of transmission and distribution lines, 29 substations, $904 million in assets, and $366 million in annual revenues. GPA currently serves approximately 49,000 customers with the U.S. Navy being the largest representing about 17% of revenues.

In 2002, the Consolidated Commission on Utilities (CCU) was established as the board of directors for both the Guam Power Authority and the Guam Waterworks Authority. The CCU is made up of five elected members and is vested with the same powers previously exercised by previous boards of directors. In addition, it retains contracting authority, establishes policies and has control over the selection of the top management of the Authority. GPA also continued its existence as a public corporation.

The Guam Waterworks Authority (GWA) is a public corporation subject to the regulations of the Guam Public Utilities Com-mission. Prior to 1996, GWA was known as the Public Utility Agency of Guam, a line department of the government of Guam. Since 2003, GWA has been governed by an elected five-member Consolidated Commission on Utilities (CCU).

GWA produces, treats, transmits, stores, distributes, and sells Guam’s water. Guam’s principal source of potable water is pumped by over 120 wells from groundwater contained in the aquifer beneath northern Guam. Surface water sources include the Ugum River, small springs, and Fena River water purchased from the U.S. Navy. GWA delivers potable water to over 41,000 account holders or potentially 123,000 persons on island.

The Guam Waterworks Authority (GWA) also collects, treats, and disposes Guam’s wastewater. Guam’s wastewater system consists of 315 miles of gravity sewer network, 74 sewer pump stations, and seven wastewater treatment plants and associated outfalls. GWA collects wastewater from approximately 25,000 account holders or 75,000 civilian persons as well as U.S. defense installations in the northern and central regions of Guam and up to 136,000 international visitors during peak months.

Water quality is monitored and enforced by the Guam Environmental Protection Agency (GEPA) which was established by Public Law 11-91 on March 3, 1973, and is mandated with ensuring that a “high quality of air, land and water is maintained in Guam”.



Guam Power Authority (GPA)
Guam Power Authority Annual Report 2015
Guam Waterworks Authority (GWA)
Guam Waterworks Authority Citizen Centric Report 2014
Guam Environmental Protection Agency (EPA)