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Dear Mister Plumber,

We recently had a backwater valve installed at our property. The installation passed inspection and the drain appears to operate properly. We are at odds with the company that completed the installation however as the pit that the valve sits in fills with water anytime it rains. Since a sump pump is not possible given the configuration of the basement, we believe some measure of waterproofing (small layer of concrete, etc.) should’ve been placed an inch or two under the valve. The pit fills with groundwater and will definitely overflow and flood the basement if a major storm occurs.

We are looking for an estimate and second opinion for possible options. We are hoping that an experienced plumber could take a look at this issue and provide us with a fair quote for a solution that will work.

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