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.