Enough for 4-6 person family use. 100GPD (260ml minmum ) purewater flow with 300CC flow restrictor, pure waste water ratio 1:1. FS-TFC products including Ice maker line kit ,Asin:B074R9PRJY.FS-TFC Ice Maker Installation Kit and Fridge Water Line Connection for Reverse Osmosis Systems, Refrigerator and Water Filters.