17-12: Current Microbiological Control Techniques in Cooling Tower Water SystemDue to the recent out breaks of Legionnaires Disease such as in New York City it was decided to investigate how and why this could have occurred by cooling tower water systems that were chemically treated. Cooling tower water systems are normally treated by the traditional method of applying microbiocides and often monitored with traditional total bacteria monitoring methods. This has prompted a detailed review of the traditional microbiological