What Does GPF Mean Toilet

Some models prefer to use an LPF measurement instead, which stands for “liters per flush.” The requirement is the same as the GPF requirement. The current standard is 6 liters per flush.

Older toilets can use much more water. Toilets that are up to 10 years old may use 2-4 gallons per flush. Older toilets sometimes used up to 6 gallons of water per flush.

How to Improve Water Use with Older Toilets

If you are not in a position to upgrade an older toilet, there are still some ways that you can save water. One of the easiest ways to improve water consumption is to install an adjustable flapper and a toilet tank bag. For a toilet that uses 6 GPF, these two modifications can offer a 50% reduction in water consumption immediately.

Installing a fill-cycle diverter, which connects to the overflow tube and fill line, and divert extra water from the bowl into the tank instead of it going down the drain. This can save an additional half-gallon per flush.

For those with a tight budget, you can still reduce your water consumption by eliminating space within the toilet tank. Find a brick or a concrete paving stone that fits within the tank and carefully place it inside. Although the material will degrade over time, you’ll save 1-3 gallons of water per flush.

By knowing your GPF rating, you’ll better understand how much water you’re actually using. That is the first step toward reducing your water consumption footprint.