Abstract: A water recovery system in which drain water from appliances, sinks and bathtubs are conserved in a storage recovery tank for treatment and reuse as a water supply for toilets. The drain water is directed through an outlet to flow over a pivoted grate that is mounted above the top opening of the storage tank, with the grate formed of spaced inverted T-shaped ribs and normally held at an acute angle, such as ten degrees, to the horizontal plane by a spring so that debris retained on the grate is washed diagonally downwards off the top surface of the grate to fall off the lower end of the grate into a debris-collection and tank overflow unit. The drain water, itself, falls between the grate ribs into the storage recovery tank.