The Indian Health Service requires monthly laboratory services to test and analyze process quality water at the Northern Navajo Medical Center in Shiprock, NM. The contractor must provide all necessary equipment for sample collection, storage, testing, and reporting. The performance period is a base year with four optional one-year extensions, for a potential total of five years. This acquisition is a small-business set-aside under NAICS code 334513. Prospective offerors must have an active SAM registration.