EPA
AA/3terSense High-Efficiency Bathroom Sink Faucet Specification
High-Efficiency Bathroom Sink Faucet Specification
1.0 Scope and Objective
This specification establishes the criteria for a high-efficiency bathroom sink (lavatory)1 faucet
under the U.S. Environmental Protection Agency (EPA) WaterSense® program. It is applicable
to all types of lavatory faucets, lavatory faucet accessories2 specifically designed to control the
flow of water, and any other lavatory faucet technologies that meet these performance
specifications.
The specification is designed to ensure both sustainable, efficient water use and a high level of
user satisfaction with lavatory faucet performance.
2.0 WaterEfficiency and Performance Criteria
Lavatory faucets and lavatory faucet accessories must conform to applicable requirements in
ASME A112.18.1.3 In addition, the flow rate shall be tested in accordance with the procedures
in ASME A112.18.1 and shall meet the following criteria:
• The flow rate shall not exceed 1.5 gallons per minute (gpm)4 (5.7 liters per minute) at a
pressure of 60 pounds per square inch (psi) at the inlet, when water is flowing; and
• The flow rate shall not be less than 1.2 gpm (4.5 liters per minute) at a pressure of 20 psi
at the inlet, when water is flowing:
The flow rate, tested at 60 psi in accordance with the procedures in ASME A112.18.1, shall
not vary beyond +/- 0.1 gpm of the certified flow rate of the product.
3.0 Effective Date
This specification is effective on July 1, 2007.
4.0 Future Specification Revisions
EPA reserves the right to revise this specification should technological and/or market changes
affect its usefulness to consumers, industry, or the environment. Revisions to the specification
would be made following discussions with industry partners and other interested stake holders.
1 Lavatory, other than public lavatory or metering.
2 Accessory, as defined in ASME 112.18.1, means a component that can, at the discretion of the user, be readily added, removed,
or replaced, and that, when removed, will not prevent the fitting from fulfilling its primary function. For the purpose of this
specification, an accessory can include, but is not limited to lavatory faucet flow restrictors, flow regulators, aerator devices, laminar
devices, and pressure compensating devices.
3 Reference to this ASME standard applies to the most current version.
4 The maximum flow rate has been established as 1.5 gpm, which is a 32 percent reduction from the 2.2 gpm standard codified
under 10 CFR Part 430 (63 FR 13307; March 18, 1998).
Version 1.0 1 February 8, 2007
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EPA
AA/3teTSense High-Efficiency Bathroom Sink Faucet Specification
5.0 Definitions
Definitions within ASME A112.18.1 are incorporated herein by reference.
Certified flow rate: The intended flow rate at a pressure of 60 psi, when water is flowing,
based on the design of the product, as marked on the product or product packaging.
Version 1.0 2 February 8, 2007
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EPA
AA/3teTSense High-Efficiency Bathroom Sink Faucet Specification
APPENDIX A
Informative Annex for WaterSense Labeling
The following requirements must be met for products to be marked with the WaterSense label.
1.0 WaterSense Partnership
The Manufacturer5 of the product must have a signed partnership agreement in place with EPA.
2.0 Conformity Assessment
Conformance to this specification must be certified by a body either accredited by ANSI in
accordance with the WaterSense certification scheme, or otherwise approved for that purpose
by EPA.
5 Manufacturer, as defined in the WaterSense program guidelines, means "Any organization that produces a product for market that
might be eligible to meet WaterSense criteria for efficiency and performance. Manufacturers may also produce "private label"
products that are sold under the brand name of a separate organization, which is treated as a separate partner/application from the
original product manufacturer."
Version 1.0 A-1 February 8, 2007
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