Grade a water fixture against national water-efficiency levels from its measured flow, and compare daily and annual water use against the old fixture, with per-person savings, to support retrofit decisions.
用水器具水效等級評估工具,對照GB 25501/30717/28378標準判定水嘴、坐便器、淋浴器、小便器的水效等級,計算年節水量。