Water Conserving Construction Practices & Ordinances

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California State Water Budget Requirement

The California Green Building Standards Code (CALGreen) in chapters 4 and requires affected construction projects to develop a water budget for landscape irrigation that conforms to the California Department of Water Resources Model Water Efficient Landscape Ordinance (MWELO). Affected projects are required to submit with their construction documents a landscape irrigation plan and water budget calculations stamped by a licensed landscape architect: 

  • New construction and rehabilitated landscapes with a total project landscape area equal to or greater than 2,500 square feet.
  • New single-family or multifamily residential construction projects that are homeowner-provided and/or homeowner-hired with a total project landscape area equal to or greater than 5,000 square feet.

Water Budget Form 

Plant List by Botanical Name

Plant List by Common Name



Senate Bill 407 (SB 407) requires noncompliant plumbing fixtures to be replaced by water-conserving plumbing fixtures when a property is undergoing alterations or improvements. This bill applies to all residential and commercial buildings constructed on or before January 1, 1994. Fixtures include water closets, urinals, showerheads, lavatory faucets, and kitchen faucets. Noncompliant fixtures can only be replaced by fixtures complying with the requirements of CALGreen and the California Plumbing Code.

Certain types of repair and maintenance projects do not trigger the upgrades at this time, such as electrical services, water heater replacement, re-roofs, window replacement, pools, signs and patios. Please check with Building & Safety Division at 818-238-5220 if you have any questions about the type of work you are doing and whether the code requires an upgrade. More information may be found here


Restroom Aerator Ordinance

Effective March 7, 2009, commercial, industrial and office restrooms located in common areas of office or apartment buildings were required to have 1.0 gallon per minute aerators installed on bathroom sink faucets. Metered faucets and faucets that are not compatible with an aerator are excepted. For questions, contact Building & Safety Division at 818-238-5220.

Water Conserving Fitting & Fixtures Ordinance

In 2008, the City was one of the first to enact a Water Conserving Fittings and Fixtures ordinance. Effective January 1, 2020, construction and remodel projects must meet new water conserving construction standards in CALGreen and the California Plumbing Code:

Links to Outside Resources

WaterSense, created by the U.S. Environmental Protection Agency

State Water Resources Control Board

California Department of Water Resources

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