Supervises, directs, develops, and evaluates assigned employees; coordinates daily work activities; organizes, prioritizes, and assigns work; monitors work in progress and completed work; addresses employee concerns and performance matters; provides coaching, counseling, training, and technical expertise; completes employee performance evaluations; and administers personnel responsibilities consistent with County policies and delegated authority. Directs and evaluates water or wastewater treatment processes and equipment applicable to the assigned facility, including pumping, chemical treatment and disinfection, filtration, membrane and reverse osmosis systems, biological treatment, aeration, clarification, sludge and solids handling, storage, effluent and reclaimed-water systems, wells, lift stations, odor-control systems, and related treatment equipment.