The Department of Defense (DOD) is seeking proposals for the development of a water tester at the point of need. The objective of this research topic is to improve water surveillance by developing a rugged and compact field instrument capable of providing microbiological and metal detection capabilities. The goal is to reduce both short- and long-term health risks to personnel. The water tester should be able to analyze for total coliforms, Escherichia coli, arsenic, lead, copper, and cyanide, providing rapid results in less than 4 hours. The equipment must be compact, durable, and able to fit in a carry-on piece of luggage, weighing no more than 25 pounds. The project will be conducted in two phases: Phase I involves a feasibility study, while Phase II focuses on developing and demonstrating a prototype system. The potential applications of this technology include military use for Special Operations Forces and conventional forces, as well as environmental programs, emergency response teams, and other federal directorates. The project duration is not specified, but the solicitation is open until March 31, 2025. For more information, visit the DOD SBIR 24.4 Annual solicitation on grants.gov.