Water comes up through my floor drain during heavy rain. Is that the same as a leaky basement?

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Water rising up through a floor drain, toilet, or basement fixture during heavy rain is a classic sign of a sewer backup rather than groundwater seepage, and the distinction matters because the solutions are completely different. Many older Cincinnati neighborhoods are served by a combined sewer that carries both sanitary waste and stormwater in one pipe. During an intense rain, stormwater can surcharge that combined sewer faster than it can drain, and the excess backs up through the lowest connected opening in your home, which is usually the basement floor drain. This is not water coming through your walls; it is water coming up your own drain line from an overwhelmed public sewer. Groundwater seepage (cove joint, wall cracks, floor) is what interior drainage and waterproofing address; a sewer backup is addressed by a backwater valve (also called a backflow preventer) installed on your sewer lateral, which lets your waste flow out but slams shut when the sewer tries to push water back in. The Metropolitan Sewer District of Greater Cincinnati (MSDGC) has run assistance and protection programs for property owners in combined-sewer areas with documented basement backups, including backwater-valve and sump-related help under its Protect Cincinnati and related initiatives; eligibility and program details change, so confirm current offerings directly with MSDGC. We diagnose which problem you actually have on the on-site assessment, because some Cincinnati homes have both a seepage problem and a backup problem, and solving only one leaves the basement wet. Note also that an illegally connected sump discharging into the sanitary sewer can contribute to exactly this surcharge, which is one reason MSDGC prohibits that connection.