Replacement Shower Head Flow Rate Requirements

In 1992, a federal mandate limited the amount of water that could flow from a replacement shower head to 2.5 gallons per minute (GPM). Some state and local governments mandate even lower GPM flow rates than the federal regulation.

The table below shows the maximum flow rate for a replacement shower head that can be sold at retail in various states/regions within the US:

* Only regulatory requirements related to retail sales of replacement shower heads are shown. Unique requirements often exist for new construction

This information is provided as a reference and was accurate at the time of posting. However, regulations may change, and it is advised to check your local jurisdictions to confirm the most current information.

State	Current Max Flow Rate For Retail Sales of Replacement Shower Heads*	Planned Changes
California	1.8 GPM	None
Colorado	2.0 GPM	None
Hawaii	1.8 GPM	None
Maine	2.5 GPM	Moving to 1.8 GPM for all products manufactured on or after 1/1/23
Maryland	2.5 GPM	Moving to 2.0 GPM for all products sold on or after 1/1/24
Massachusetts	2.0 GPM	None
New Jersey	2.0 GPM	None
New York	1.8 GPM	None
Oregon	1.8 GPM	None
Rhode Island	2.0 GPM	None
Vermont	2.0 GPM	None
Washington	1.8 GPM	None
All states not shown	2.5 GPM	TBD

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