If your basement floor is below your sewer line (and most are), a gravity toilet won't work down there. You need what's known as an upflush toilet that uses a pump to flush everything into the sewer.

Best Sump Pump Backup Systems of 2024. Jesse Will. Sat, September 28, 2024 at 7:47 AM UTC. 6 min read. ... These systems act as a fail-safe, stepping up to keep your basement dry.