The G-Flow Grey Water System effectively manages runoff waste water from the home, allowing you to reuse the water to keep your garden green, without having to rely on extra municipal water. This system is complete and tankless, meaning that the water is filtered and diverted immediately, not stored, reducing odors and the space needed for the system. The G-Flow system also uses a patented 3 way valve to divert excess water to the sewer, when the grey water is not required, in the case of excess water or during electricity outages.