Review the U.S. Environmental Protection Agency (EPA) document, Building Air Quality: A Guide for Building Owners and Facility Managers (see Resources). The IAQ plan will be based on this document.
CI projects must include in their water-use calculations any fixtures used by occupants, even if the installation of the fixtures is not within the scope of the project.
The baseline for commercial lavatory faucets has been changed in LEED 2009 to 0.5 gpm, from 2.5 gpm in previous LEED rating systems. There are a handful of aerators and commercial faucets that perform better than 0.5 gpm, but the use of this low baseline means that you will probably need to focus on getting water reductions elsewhere.
Janitors’ sinks, pot-fillers, and tub faucets can be left out, as they are used to fill containers with a fixed water volume regardless of the flow rate.
Run preliminary water use calculations to establish the baseline water use and confirm goals for water-use reduction. This should include clearly identifying target flow and flush rates for fixtures.
Determine user groups for the various water fixtures, as not all occupants may be using all fixtures. For example in an elementary school, teacher restrooms and student toilets have different usage patterns that would affect the water use calculations if the fixtures were different. For example:
Determine user groups for the various water fixtures, as not all occupants may be using all fixtures. For example, employee restrooms and customer toilets in a retail store have different usage patterns that would affect the water use calculations if the fixtures were different. For example:
