Toilets account for almost 30% of residential indoor water use in the United States.
Toilets are also a major source of wasted water due to leaks and inefficiency. In a home that was built prior to 1993 it is most likely that the toilet uses 3.5 gallons or more for every single flush (in Dekalb County alone, approx. 165,000 homes were built prior to 1993 – there are approx. 1 Mio. Homes in the Greater Atlanta area that still have old, inefficient toilets in use). Experts say that the minimum needed to meet the basic human needs of drinking, cooking and hygiene is five gallons of clean water per person per day. It’s far from enough to ensure health and well-being-just enough to get by. Do we really need to flush down that much each time we go “Number One”?
In the beginning of modern toilets there was the seven-gallon flushing porcelain lavatory. Then there was the low-flush toilet. And by the time you’d flushed several times the bowl was “clear” and you had flushed more water than you did with the faithful lavatory.
Then there was the new and improved low-flush toilet, which was better but still not what always got the job done. And finally, the High-Efficiency toilet arrived; you now have your choice of flushing as little as .8 gallons with dual flush toilets. The best part is that they really work!
What Are High-Efficiency Toilets?
Under federal law, toilets must not exceed 1.6 gallons per flush (gpf). High-efficiency toilets (HETs) go beyond the standard and use less than 1.3 gpf. The WaterSense label will be used on HETs that are certified by independent laboratory testing to meet rigorous criteria for both performance and efficiency. Only HETs that complete the third-party certification process can earn the WaterSense label.
Do High Efficiency Toilets Work?
Everyone is concerned about the performance of low-flow toilets. Do they clear the bowl and leave it clean? Do they stop up frequently? Unlike the first 1.6 gallon / flush toilets, WaterSense HETs combine high efficiency with high performance. Advances in toilet design permit WaterSense HETs to save water without loss of flushing power. In fact, many perform better than standard toilets in consumer testing. Want proof? Watch this amazing video of Eddie Wilcut, the Water Conservation Manager for the City of San Antonio, flushing a Russet potato down a Caroma toilet with the full flush (1.6 gallon) AND half flush (0.8 gallon), which is meant for liquid waste.
How Much Water and Money Do HETs Save?
High efficiency toilets save you money by reducing your water and wastewater costs. Over the course of a lifetime, an average person flushes the toilet nearly 140,000 times. If you install a WaterSense HET, you can save 4,000 gallons per year and your children can each save about a third of a million gallons during their lifetime. If a family of four replaces one 3.5 gpf toilet made between 1980 and 1994 with a WaterSense toilet, they can save $2,000 over the lifetime of the toilet. If the toilet being replaced was made before 1980, it uses 5 gallons per flush so the savings will be much greater. If you’d like to calculate how much water you can save try the water savings calculator on www.ecotransitions.com.
With these savings, new high-efficiency toilets can pay for themselves in only a few years. Even better, many local utilities offer substantial rebates for replacing old toilets with HETs. Detailed information on the rebates available in Georgia can be found here Rebates in Georgia.
What are Dual Flush toilets?
Dual flush toilets offer a patented dual flush technology consisting of a 0.8 Gal flush for liquid waste and a 1.6 Gal flush for solids. They can save up to 40% (approx. 4600 gallons) compared to today’s standard 1.6-gallon single flush toilets. On an average of 4/1 uses a day, Dual Flush toilets have the lowest water consumption of all – 0.96 Gallons per flush. Caroma, an Australian manufacturer that invented the Dual Flush technology manufactures award winning toilets that are both user friendly and, with a full 3.5″ trap way, virtually blockage-free! Wouldn’t that be nice to be able to finally kiss the plunger good bye? Beware of some products reducing the amount of water flushed to use with your existing toilet. Existing bowls are not designed to perform with reduced amounts of water, so the likelihood of clogging your toilet while you are trying to flush paper and solid waste increases drastically.![]()
Select a WaterSense Labeled High-Efficiency Toilet!
Whether you are remodeling a bathroom, beginning construction of a new house, or just want to replace an old, leaky toilet, a WaterSense labeled HET is your best bet. Look for the WaterSense label on any toilet you buy. If every home in the United States replaced just one old toilet with a new HET, we would save almost one trillion (spelled with a T)
gallons of water per year, equal to more than two weeks of the water flowing over Niagara Falls!
Note that some manufacturers offer high-efficiency and ordinary models with very similar names, so be sure and look for the WaterSense label. A list of WaterSense labeled High-Efficiency Toilets can be found here List of WaterSense labeled HET’s published by the EPA.
Where can I find a HET?
To find WaterSense partners and resources in your area, please follow the link and click on your state below or choose from the list that follows. EPA – Where you live
For a watersavings calculator and more information on Dual Flush toilets please visit
www.ecotransitions.com.

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Revised Draft Water-Efficient Single-Family New Home Specification – Public comment period until July 7
Source http://www.epa.gov/watersense/specs/homes.htm
Update
EPA will conduct a public meeting on June 10, 2009 from 8 am – 5 pm (Eastern Time) at the Holiday Inn Capitol – Washington, DC . To register for the meeting, please fill out and submit the Water-Efficient Single-Family New Home Public Meeting Registration Form by June 3, 2009.
EPA will hold an additional public Webinar on June 22, 2009 from 1 pm – 4 pm (Eastern Time) for those unable to attend the Washington, DC meeting. To register for the Webinar, please fill out and submit the Water-Efficient Single-Family New Home Public Meeting Registration Form by June 17, 2009.
Revised Specification Information
EPA released a draft specification for water-efficient single-family new homes on May 22, 2008. Based on substantial feedback and significant revisions, EPA released a revised draft specification on May 8, 2009.
This specification establishes the criteria for water-efficient new homes under EPA’s WaterSense program. When finalized, it will be applicable to newly constructed single-family homes and townhomes, three stories or less in size.
In addition, to meet the Landscape Design Criteria (Section 4.1.1), the builder may choose to comply by completing a water budget. EPA has developed a tool to guide these calculations. The first version of the tool, released on November 20, 2008, was based on methodology developed by the irrigation industry as described in Irrigation Association’s Landscape Irrigation Scheduling and Water Management (2005). This second version incorporates additional research and recommendations suggested by stakeholders as part of the public comment process.
The third-party verification of WaterSense labeled new homes is intended to confirm that the builder has met the criteria of EPA’s specification for water-efficient single-family new homes. The inspection and irrigation audit guidelines explains how inspectors verify that the criteria have been met and must be followed in conjunction with the specification. These guidelines have been revised to incorporate revisions to the specification criteria and methods by which they will be tested.
Inspection Guidelines and Inspection Checklist (PDF) (21 pp, 208K, About PDF)
EPA is interested in obtaining input from all interested parties on the revised draft specification materials. The public comment period is open for 60 days and ends on July 7, 2009. Please send any comments or suggestions regarding the revised draft specification materials to <watersense-newhomes@erg.com>. All comments become a part of the public record.
In order to facilitate the consistency and utility of comments received, please submit your comments using the Template for Public Comment Submission (MS Word) (1 pp, 50K). You may either download and save this document template and directly insert your comments, or attach your comments in your own document, provided that you clearly reference the text/section in question, your recommended changes, and why you think these changes are needed.
Additionally, WaterSense will be conducting a public comment meeting in June 2009. Additional information will be posted as it becomes available.
For more information about the water-efficient single family new home specification process, including the first draft, public comments, and EPA’s response to the public comments of the specification and water budget tool, please see the Water-Efficient Single-Family New Home Specification Background Materials page.
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