CSLB C-36 Plumbing ContractorFixture and Appliance InstallationEasy

A plumber is installing a new kitchen sink faucet. The faucet manufacturer specifies a maximum flow rate of 1.8 gallons per minute (GPM) at 60 pounds per square inch (PSI). The local plumbing code requires all new kitchen faucets to be WaterSense labeled. Which of the following is the most important consideration for compliance?

  1. AConfirming the faucet's finish matches existing kitchen hardware.
  2. BVerifying that the faucet has a flow rate of 1.8 GPM or less.
  3. CEnsuring the faucet includes a built-in spray head for convenience.
  4. DChecking if the faucet is made of lead-free brass for durability.
Show answer & explanation

Correct answer: B. Verifying that the faucet has a flow rate of 1.8 GPM or less.

WaterSense labeled faucets are specifically designed to meet EPA criteria for water efficiency, which includes a maximum flow rate of 1.8 GPM. Therefore, verifying the flow rate is the primary compliance consideration.

Why the other options are wrong

  • A. Aesthetic considerations like finish are not relevant to plumbing code or WaterSense compliance.
  • C. While spray heads are common, they are not a requirement for WaterSense labeling or code compliance.
  • D. Lead-free requirements are important for health but are separate from WaterSense flow rate criteria.

WaterSense Kitchen Faucet Flow Rate

WaterSense is an EPA program that identifies water-efficient products. For kitchen faucets, this typically means a maximum flow rate of 1.8 gallons per minute (GPM).

  • EPA voluntary program.
  • Kitchen faucets must not exceed 1.8 GPM.
  • Saves water and energy.

Memory trick: WaterSense saves water, so check the flow rate to be great.

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