The University of Guam’s WERI Water Quality Laboratory is open for water quality testing services on an appointment basis between 8 a.m. to 3 p.m. Mondays to Thursdays. To schedule an appointment to deliver a water sample or to inquire about general lab services, email weri.invoice@triton.uog.edu or contact Interim Lab Manager Mallary Dueñas at (671) 735-2688 or mnduenas@triton.uog.edu.