唯嘉同層排水源于歐洲，在歐洲已經比較成熟，目前在德國、意大利、荷蘭等國家的建筑物70%以上都使用了先進的同層排水系統，應用已經較廣泛，此種排水的方式正是因為有著眾多的優點在中國也被設計院所認同，同層排水正在向一個新的高度跨越。

        同層排水系統也稱墻排水，所有衛生器具的下水管不穿越樓板，坐便器采用后排水的方式，各個衛生器具從假墻里布置或沿墻、貼地布置，最終連接至排水立管的布置方式。

The same floor drainage originates from Europe and has been comparatively mature in Europe, at present the same floor drainage system has been extensively applied and advanced same floor drainage systems have been employed for more than 70% buildings in Germany, Italy and the Netherlands, etc. Because of multiple merits, such drainage way is identified by design institutes in China, and the same floor drainage is spanning towards a new height.

The same floor drainage system is also called wall drainage, in which sewer pipes of all sanitary fixtures do not pass through floorslabs, rear drainage is adopted for toilets, and all sanitary fixtures are arranged in false walls or along walls and on the ground, and finally connected to vertical pipes of drainage.