The City has an on-site laboratory at Tillman to analyze samples of the plant influent, effluent, and river. Thousands of samples are collected and tested annually. The water is tested with extremely sensitive devices for water quality, characteristics of sediments, and populations and health of aquatic life. Biochemical Oxygen Demand, Total Suspended Solids, oils, pesticides, bacteria, and many other parameters are carefully monitored. Findings are regularly reported to local, State, and Federal regulatory agencies.