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Problems Identified <br /> 1) The discharge line from the sump pump in the basement is connected upstream of <br /> the backwater valve. Also, a floor drain and other basement fixtures outlet to the sump <br /> pump discharge line upstream of the side sewer and backwater valve. During a <br /> surcharge event when the pump starts the water is unable to drain to the side sewer <br /> since the backwater valve closes. Therefore the water backs up through the floor drain <br /> or other at risk fixtures and is re-cycled back to the pump. <br /> Solution: <br /> Disconnect the sump pump discharge line from the drain line for the other basement <br /> fixtures. Install a separate discharge line for the sump pump that routes to the yard, or <br /> route the sump pump discharge line so that it connects to the side sewer downstream of <br /> the backwater valve so that pumped water can flow down into the sewer main when <br /> backwater valve is closed. <br /> Site Drainage and Plumbing Sketch <br /> See attached drawing. <br /> Comments <br /> • All down spouts that are connected to the side sewer could be disconnected and <br /> routed to splash blocks so that less flow is in the side sewer causing potential <br /> surcharge events. Where downspouts are routed to splash blocks the ground <br /> surface should be sloped away from the house. <br /> Additional Photos and Descriptions <br /> • <br /> , Y <br /> j <br /> +\ <br /> ". j <br /> Back door drain, connected to side sewer <br />