How much water does it take to flush a loo?

The amount of water used to flush a toilet can vary significantly depending on the type of toilet. Older models typically use around 3.5 to 7 gallons per flush, while modern, high-efficiency toilets use about 1.28 to 1.6 gallons per flush. Dual-flush toilets offer options for a lighter flush, using as little as 0.8 gallons for liquid waste. Overall, advancements in toilet design have greatly reduced water consumption in recent years.