On August 9, 2003, NASA, with the cooperative support of the Vehicle Office of the International Space Station Program, the Advanced Human Support Technology Program, and the Johnson Space Center Habitability and Environmental Factors Office released a Request for Information, or RFI, to identify next-generation environmental monitoring systems that have demonstrated ability or the potential to meet defined requirements for monitoring air and water quality onboard the International Space Station. This report summarizes the review and analysis of the proposed solutions submitted to meet the water quality monitoring requirements. Proposals were to improve upon the functionality of the existing Space Station Total Organic Carbon Analyzer (TOCA) and monitor additional contaminants in water samples. The TOCA is responsible for in-flight measurement of total organic carbon, total inorganic carbon, total carbon, pH, and conductivity in the Space Station potable water supplies. The current TOCA requires hazardous reagents to accomplish the carbon analyses. NASA is using the request for information process to investigate new technologies that may improve upon existing capabilities, as well as reduce or eliminate the need for hazardous reagents. Ideally, a replacement for the TOCA would be deployed in conjunction with the delivery of the Node 3 water recovery system currently scheduled for November 2007.Fishman, Julianna L. and Mudgett, Paul D. and Packham, Nigel J. and Schultz, John R. and Straub, John E., IIAmes Research Center; Johnson Space CenterINTERNATIONAL SPACE STATION; POTABLE WATER; CONSUMABLES (SPACECREW SUPPLIES); MONITORS; WATER QUALITY; ENVIRONMENTAL MONITORING; SPACECRAFT EQUIPMENT; SPACECRAFT ENVIRONMENTS; WATER SAMPLING; CARBON...