Toilets
In 1987, 1.6 gallon-per-flush (GPF) legislation was passed in Massachusetts, giving manufacturers two years to comply. Most manufacturers simply reduced the size of their tanks, which resulted in poor performance and multiple flushes.
At TOTO, we had already optimized the performance of our toilets since we'd been designing and developing low-volume flushing systems for decades. Most recently, the EPA has integrated some of our stringent methods into its testing protocols, a testament to the effectiveness of our approach to water savings. In fact, our rigorous flushing tests are more extensive than current industry standards so we can ensure outstanding one-flush performance and true water savings.

![]() | It’s a scientific fact—gravity plus significant centrifugal force will spin most anything away efficiently. Like a cyclone in nature, the Double Cyclone flushing system harnesses the power of water and gravity to create a more powerful 1.28 GPF that maximizes cleaning action. Double Cyclone features:
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![]() | Unlike pressure assist toilets, which can be noisy and are made with more complicated moving parts, E-Max is a simple and quiet solution for effectively flushing 1.28 gallons. Utilizing the same proven engineering as our legendary 1.6 GPF G-Max flushing system, the 1.28 GPF E-Max reinforces TOTO’s performance reputation while offering an additional water savings of 20%. E-Max features:
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![]() | The TOTO Dual-Max flushing system is the leading choice for dual flush performance and conservation because it doesn't sacrifice performance for conservation like many other dual-flush solutions in the market. Our goal was to optimize water conservation and set a high bar in flushing performance. Dual-Max features:
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![]() | G-Max’s extra-wide 3” flush valve and wide 2-1/8" glazed trapway offer increased flow, drawing water into the bowl more quickly, and then away more forcefully . And with G-Max’s powerful siphon jet, the system makes sure what goes down stays down. G-Max is the industry benchmark for flushing performance with features like:
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