03-10: Real-Time Biological MonitoringControl of Microbiological contamination in cooling towers requires an efficient means of measuring the contamination. ATP based testing methods offer immediate results and measure the total microbial population, both aerobic and anaerobic, in one step. Methods for spot checking towers, measuring biocide efficacy, detecting biofilms, and monitoring biofilm clean up are described. Differential effects of oxidizing and non oxidizing biocides on ATP