Washington State Law: Multiple Shower Heads in Shower

Discussion in 'UPC Plumbing Code Questions' started by Tuttles Revenge, Mar 17, 2021.

  1. Tuttles Revenge

    Tuttles Revenge In the Trades

    Oct 15, 2014
    Got a notification from one of our plumbing suppliers about a change in the law regarding multiple shower heads in Washington state.
    408.2.1 Multiple Showerheads Serving One Shower. When a shower is served by more than one showerhead, including handheld showerheads, the combined flow rate of all showerheads and/or other shower outlets controlled by a single valve shall not exceed 1.8 gallons (6.81 L) per minute at 80 psi, or the shower shall be designed to allow only one shower outlet to be in operation at a time.

    Few things come to mind.
    Body sprays
    Moen U. You can operate all 4 functions simultaneously at up to 14gpm!!
    gang showers
    bathrooms with 2 separate shower valves in the same shower.. Jack n Jill..
  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    When I was building new homes, I was installing the Jack and Jill set up. A shower valve and head on opposing walls. One person waiting to use the water seems a bit dumb to me.
    Tuttles Revenge likes this.
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  4. Tuttles Revenge

    Tuttles Revenge In the Trades

    Oct 15, 2014
    Agreed.. will be interesting to see how that plays out.
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