A waste water diverter apparatus enables an undisturbed flow of fluid and solids in the waste water through the apparatus. The waste water diverter apparatus includes a substantially Y-shaped valve housing with an inlet port, a first outlet port and a second outlet port, and an inner valve member having a circular aperture and rotatably mounted to the Y-shaped housing. The circular aperture has an angled pathway that extends through the inner valve member. The inner valve member adjusts to a first position to enable the aperture to connect the inlet port to the first outlet port and a second position to enable the aperture to connect the inlet port to the second outlet port.