Basement & Crawl Space Flood-Risk Check for Atlanta

Metro Atlanta sits on dense red clay that holds water tight against the foundation, so hydrostatic pressure pushes groundwater through basement walls, floor cracks, and crawl space vents. A hard summer cloudburst can overwhelm the storm drains in minutes, and homes near Peachtree Creek, Nancy Creek, and the Chattahoochee flood again and again. Aging intown combined sewers can also surcharge in heavy rain and back up through a floor drain.

Both help with different problems. A sump pump and pit move groundwater out of a basement, and a battery or water-powered backup keeps it running when the storm knocks out the power. A backwater valve on the sewer line lets waste flow out but closes when water tries to push back in, which is the best defense against a combined sewer backup through a basement floor drain.

Keep gutters, downspouts, and yard drains clear so rain moves away from the house, grade the soil to fall away from the foundation, add or maintain a sump pump with a backup, ask a plumber about a backwater valve, and know where your main water shut-off is. For an older crawl space, controlling the moisture with drying and a vapor barrier keeps it from feeding mold.

If it is safe, stay off the wet floor, keep clear of outlets and the electrical panel, shut off power to the basement if you can reach it safely, and call us. If the water came up from a sewer line, do not touch it, it is Category 3 black water. Whoever answers the Atlanta line talks you through the rest while a crew heads your way.