... type, to obtain high quality tap open water, that is, health and safety. (2) Large flow: The existing 50 gallons of ... rust, sand and granule larger solid impurities of water 3 ~6 months2Activated carbon filter Remove more oxygen, humus, smell, and other ... or irrigation or other purpose)Output flow (per hour):2. about raw water:Water type: (underground water or surface water or seawater or other type ...