When a sewage backup occurs, time is of the essence. Not only is sewage cleanup a messy and unpleasant task, but it can also be hazardous to your health. Sewage contains harmful bacteria that can cause a variety of illnesses, including E. coli, salmonella, and shigella. If left untreated, even a small amount of sewage can contaminate your home and make you and your family sick. **Cleanup and Disinfection** The first step in sewage cleanup is to remove all visible sewage from the affected area. This can be done using a wet/dry vacuum cleaner or a mop and bucket. Once the sewage has been removed, the area should be disinfected with a bleach solution. Bleach is a powerful disinfectant that kills bacteria and viruses on contact. To make a bleach solution, mix 1 cup of bleach with 1 gallon of water. Apply the bleach solution to the affected area and let it sit for at least 10 minutes before rinsing with water. **What Kills Sewage Bacteria?** In addition to bleach, there are a number of other products that can be used to kill sewage bacteria. These include: