CUSTOMER LINKS
Business Hours
Mon.- Fri, 7:30 a.m. 6:00 p.m. Closed on GovGuam Holidays
Phone: (671) 647-7800/3
Physical Address:
578 North Marine Corps Drive,
Tamuning, Guam 96913-4111
adjacent to
Department of Public Works
behind Guam Telephone Authority
Mailing Address:
P.O. Box 3010
Hagatna, Guam 96910
Mon.- Fri, 7:30 a.m. 6:00 p.m. Closed on GovGuam Holidays
Phone: (671) 647-7800/3
Physical Address:
578 North Marine Corps Drive,
Tamuning, Guam 96913-4111
adjacent to
Department of Public Works
behind Guam Telephone Authority
Mailing Address:
P.O. Box 3010
Hagatna, Guam 96910
Laboratory Services Division
Email: cdenton@guamwaterworks.org
GWA Laboratory Services Division monitors Guam water quality to make
sure that water from the tap is safe to drink.
We also check all discharges from the wastewater treatment plants to
ensure that our beaches and rivers are safe for public use.
