What is the flow rate of a toilet?

The flow rate of a toilet typically ranges from 1.28 to 1.6 gallons per flush (GPF) for modern, efficient models, while older toilets may use up to 3.5 to 7 GPF. This flow rate determines how much water is released during a single flush to effectively remove waste. Low-flow toilets are designed to conserve water while still providing adequate flushing performance. The specific flow rate can vary based on the toilet's design and manufacturer.