Operates, inspects, maintains, overhauls and makes major and minor repairs to wide variety of pumping, heating, ventilating, process machinery and equipment in a wastewater treatment plant or pumping station, including pumps, bar racks, grit collectors, conveyors and washers, chlorinators, evaporators and storage tanks, sludge collectors, drive units, deodorizing equipment and a wide variety of metering and recording devices to assure the safety and efficiency of equipment and facilities; includes lubricating and greasing machinery and equipment; cleaning and maintaining machinery, equipment and facility to ensure safety and equipment reliability. The essential functions of this classication include, but are not limited to, the following: Makes regular visual, audio, olfactory and tactile inspections and/or manual tests of all plant machinery and equipment, including auxiliary equipment, in an assigned area or pumping station, maintaining logs and records of required maintenance, completed maintenance, equipment and work order history by taking periodic readings of gauges and meters to ensure that sewage plant is working safely, efficiently and properly; and to provide an accurate record of maintenance, preventive maintenance, equipment, and work order history.