A sanitation assembly (1) comprising a first chamber (2) with a first volume (2a) for receiving a first fluid, and a second chamber (3) with a second volume (3a) for receiving a second fluid, wherein the first volume (2a) communicates with an outlet (6) of the assembly (1) via a first valve mechanism (4) configured to allow discharge of the fluid from the first volume (2a) to the outlet (6) at a predefined first opening pressure, wherein the second volume (3a) communicates with the outlet (6) of the assembly (1) via a second valve mechanism (5) configured to allow discharge of the fluid from the second volume (3a) to the outlet (6) at a predefined second opening pressure, and wherein the predefined second opening pressure of the second valve mechanism (5) is higher than the predefined first opening pressure of the first valve mechanism (4).
