March 21, 2014 4:57 am
Since 1994, when the 1992 EPAct legislation took effect, innovative toilet technology has transitioned the nation from a water-guzzling 3.5 gallons per flush (gpf) to a low-flow 1.6 gpf toilet diet and, more recently, toward high efficiency 1.28 gpf models. In the process, the amount of water consumed has been reduced by more than half, with usage rates down by 54 percent and 63 percent, respectively. These savings have been impactful, as toilets represent the single largest source of water consumption in a home, accounting for nearly one-third of residential water use, according to the U.S. Environmental Protection Agency (EPA).
The estimated 18.2 trillion gallons in cumulative water savings that has resulted from the use of low-flow toilets highlights how water conservation policies, such as the 1992 EPAct, impact and help sustain the nation's water supplies, noted Mary Ann Dickinson, president and CEO of Chicago-based AWE, the national nonprofit organization dedicated to the efficient and sustainable use of water.
"These toilets help save an estimated 4.6 billion gallons of water each and every day in the U.S.," said Dickinson. "When you add in the further water reductions achieved by high efficiency 1.28 gpf toilets, the savings are even more outstanding. Water is the critical resource issue of our time, and smart water conservation policies work to ensure that we have sustainable supplies for the future."
The Road to High-Performing Toilet Technology
During the early 1990s, when water use restrictions first took effect, plumbing product manufacturers struggled to produce low-flow toilets that could effectively remove all waste with only 1.6 gallons of water, prompting frustration among users who resorted to counterproductive double-flushing. However, by 1998, toilet manufacturers had successfully modified flushing systems to remove waste using less water.
As the first decade of low-flow technology drew to a close, a flushing evaluation system would be introduced that changed the industry. Maximum Performance (MaP) testing was implemented in 2003 to measure the amount of solid waste removed per flush. This independent testing program inspired toilet producers to strive for the highest rating of successfully flushing 1,000 grams (2.2 lbs.) of solid waste.
In 2006, to drive even greater water savings, the EPA created WaterSense, a partnership program modeled after the EnergySTAR labeling program to help assure consumers that products will conserve and perform as promised. WaterSense-certified toilets use 20 percent less water than low-flow models, while providing strong flushing power. Commode makers were motivated to create high efficiency toilets (HETs) that used only 1.28 gpf while delivering strong flushing performance.
For homeowners looking to save further on their water bill, make sure all your home’s toilets are low-flow models.
Source: American Standard Brands
Published with permission from RISMedia.