Starting in 1995, The National Energy Policy Act mandated that all new toilets had to be low flow toilets using no more than 1.6 gallons per flush. This volume is less than half the water used by toilets in the 1980s. Toilets consume an average of 20.1 gallons of water per person, per day. That’s nearly 30 percent of an average home’s daily per-person indoor water use. Upgrading from a 3.5 gpf (gallons per flush) toilet to a 1.6 gpf model will reduce one person’s annual water use from 27,300 gallons to 12,500 gallons.
The first low flow toilets were made by adding water-saving modifications to a standard design toilet. These modifications would reduce the overall use of water, but they had a reduced flush force which met with a lot of customer dissatisfaction. But 1.6 gpf ultralow-flow toilets have improved dramatically since then.
Low flow toilets have evolved once again with the introduction of the dual-flush toilets. The dual-flush gives you a choice: push one button for flushing liquid waste (.8 gallons of water) and another for solid waste (1.6 gallons). Caroma pioneered the dual-flush system to help conserve water, but they made it efficient, too. The gaping 4-inch trapway on the Caroma helps ensure that when you go so does your waste. And although it is a gravity-assist flush system, it doesn't use the siphonic action of traditional toilets, in which waste is pulled out of the bowel after the water. Caroma uses a wash-down system: there's very little water in the deep bowl; most of it comes cascading down from the tank through the rim of the bowl. Find out more about Caroma's high efficiency toilets at http://www.caromausa.com/toilets.
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