U.S. EPA WaterSense® Certification

The WaterSense® program offers consumers a simple way to make product choices that use less water, with no sacrifice to quality or product performance. Products bearing the WaterSense® mark are certified more water-efficient than products that don’t meet WaterSense® standards.

Using water more efficiently will conserve supplies for future generations. According to a 2014 U.S. Government Accountability report, 40 out of 50 state Water Managers expect water shortages under average conditions in some portion of their states over the next decade. Each American uses an average of 88 gallons of water per day at home, but can easily reduce that figure by 20 percent by making simple changes.

Since the program’s inception, IAPMO R&T has been a licensed certifying body for the U.S. EPA’s WaterSense® program, working with manufacturers to certify their products’ compliance to the WaterSense® standards. IAPMO R&T was also among the first certification bodies to be ANSI accredited as a U.S. EPA WaterSense® third-party certification body. ANAB-accreditation adds value to the certification process, ensuring that certification bodies demonstrate compliance with the WaterSense® product certification system and are capable and competent to carry out their responsibilities.

Protecting and preserving the nation’s water supply is critical to the United States’ economic future and human health.




Scope of Products Certified

  • High-Efficiency Lavatory Faucets
  • Tank Type High-Efficiency Toilets
  • Flushing Urinals
  • Showerheads
  • Weather-Based Irrigation Controllers 
  • Flushometer-Valve Toilets
  • Spray Sprinkler Bodies
  • Soil Moisture-Based Irrigation Controllers

Manufacturers seeking WaterSense® certification can utilize IAPMO R&T for the same trusted evaluation service on which they’ve always relied. Our certification speed and unparalleled customer service make IAPMO R&T the ideal choice for manufacturers seeking a competitive edge.

Water Closets, Urinals and Flushometer valves


Lavatory faucets and lavatory faucet aerators
Water efficiency test.

Showerheads and handheld showers
Testing includes water efficiency test, spray force test, and spray coverage test.


For more information on certifying WaterSense® products with IAPMO R&T, call (909) 472-4100 or e-mail us at info@iapmort.org.

For more information on the U.S. EPA WaterSense® program, visit www.epa.gov/watersense.


  • Georgia’s Water Stewardship Act (SB370) requires lavatory faucets, showerheads, toilets and urinals to be WaterSense® certified.
  • Starting in July 2012, the New York City plumbing code requires increased water efficiency for all new water closets (toilets), urinal, private lavatory faucets and showerheads and it requires that fixtures going forward meet the specifications required for EPA’s WaterSense label.
  • In 2014, the Colorado General Assembly passed Senate Bill 14-103 (SB103) which requires that all lavatory faucets, showerheads, tank type toilets, and flushing urinals sold in the State of Colorado on or after September 1, 2016 to be WaterSense labeled.