Install drip-lines or sprinklers to water plants automatically.
Cleans water filter beds: Holds suction pipe to transfer sand and gravel from filter bed onto regrading screens. Washes and simultaneously screens sand and gravel to remove foreign particles and grade material according to size, using water hose. Turns handle to backwash filter to remove chemical precipitates and impurities. Scrapes and removes dirt from side of filter bed, using metal scraper. Reverses action of suction pipe to return gravel and sand to filter bed. Records daily production. May clean and redistribute sand in filter bed, using sand cleaning machine. May lubricate and repair defective filtering equipment.