Position Hours. 8:00 am to 5:30 pm, Monday through Thursday and 8:00 am to 12:00 pm on Friday. Minimum Job Duties. Performs responsible semi-skilled and administrative work. . in the operation, maintenance, construction, and repair of a water/wastewater system. Installing, repairing and maintaining water/sewer lines, meters and related facilities. making line taps. Performs water and sewer line maintenance, repair, installation and replacement ta...