Operates, evaluates, and optimizes treatment processes and equipment applicable to the assigned facility, including pumps, motors, valves, blowers, wells, chemical feed and disinfection systems, filtration systems, membrane and reverse osmosis systems, biological treatment systems, aeration basins, clarifiers, sludge and solids-handling systems, storage and pumping systems, effluent and reclaimed-water systems, Lift stations, odor-control systems, and other related treatment equipment. Performs applicable testing for alkalinity, calcium hardness, chlorine, conductivity, dissolved oxygen, phosphate, pH, silt density index, settleable solids, suspended solids, total dissolved solids, total hardness, volatile solids, and other required parameters; conducts quality-control testing; evaluates results in relation to operating conditions; and records results on required charts, Log sheets, worksheets, or computerized systems.