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in the Green Procurement Compilation

Learn & Plan Topics

  • Water Efficiency

    Buildings are significant users of the Earth’s freshwater supply. The goal of a responsible building operator should be to encourage a sma...

  • Space Reconfiguration and Renovation Projects

    As needs change over time, tenants often need to convert space or phase the conversion of individual space or rooms to meet these changing needs....

  • Building Systems Upgrades

    This page details Sustainable Strategies to consider as your space undergoes a building system upgrade to improve energy, water use, and occupant co...
  • Best Practices & Case Studies

    One of the best ways to learn and make the case for green building innovations is to point to others’ experience in implementing these innovat...
  • Tools & Training

    This section covers and links to systems, methods, databases, calculators, checklists, etc. designed to help Federal officials and their partners ac...

Dual-Flush Toilets

A dual-flush toilet is a type of high-efficiency fixture. Dual-flush toilets are those that have two levels of flushing – a higher water use flush (full flush) for solids and a lower water use one (reduced flush) for liquids. The effective flush volume of a dual flush toilet is 1.28 gallons per flush. Dual-flush toilets are available in tank or flush valve types.

See High-Efficiency Fixture.

Whole Building Systems

  • Water - Green Tips

    Use alternate non-potable water sources such as gray water, rainwater, air handling unit condensate, cooling tower blow-down or discharge from other...

  • Water - CIEB

    Are there the following water-conserving fixtures: high-efficiency toilets that use less than 1.6 GPF? Ultra low flush urinals that use less than 1....

  • Water - Plumbing Fixtures

    High efficiency plumbing fixtures (toilets, urinals, faucets, and showers) can lead to significant water savings. FEMP BMP #6 gives some guidance on...

  • HVAC - Water Use

    HVAC components, particularly cooling towers, steam systems, and humidifiers, are responsible for large amounts of water consumption in our building...

  • Water - Greywater Reuse

    Greywater is the water stemming from processes such as showers, hand basins, or kitchen sinks but does not contain any human waste. Reusing greywate...

  • Water - Green Globes Continual Improvement of Existing Buildings (CIEB)

    Green Globes CIEB encourages cognitive implementation and metering of water heating equipment for energy efficiency measures. With regards to water ...

  • Water - Water Harvesting (Water Catchment Systems)

    Harvesting systems capture alternate water sources, provide adequate treatment typically for non-potable applications to offset the consumption of p...

  • Water - Occupant Behavior on Water Consumption

    Occupants have a direct impact on water use and are key to a building’s water conservation program. Significant water can be wasted from occu...

  • Water - Fixture Performance

    Water components can eventually drift out of spec and begin to not perform up to standards. Automatic sensor faucet valves, if not functioning prope...

  • Water - Conservation Measures

    Commercial buildings have significant opportunities to conserve the quantity of water needed for daily operations through thoughtful design of the b...

  • Water - Alternate Water Sources

    Alternate water sources are not from freshwater such as surface or groundwater. Alternate water is typically collected and stored on-site and then ...

Materials

  • Dual-flush Toilets

    Dual-flush toilets have two levels of flushing - a full for solid waste and a reduced flush for liquid waste. Typically full flushes range f...
  • Composting Toilets

    Composting toilets use an aerobic process to break down waste by using little or no water. There are two types of composting toilets: [self-con...
  • Toilet / Shower Accessories

    Toilet and shower accessories include soap dispensers, soap dishes, hand dryers, paper towel dispensers, trash cans, etc. These items may contain...
  • Toilet Partitions

    Toilet partitions can be floor-mounted, wall-mounted, or ceiling-mounted for ease of cleaning. Floor mounted toilet partitions ...
  • High-Efficiency Toilets

    High-Efficiency toilets are those that use 1.28 or less gallons of water per flush gpf. Also included are composting toilets which require litt...
  • Low-Flow Toilets

    Low-flow toilets are based upon the Energy Policy Act of 1992 (EPAct 1992) and use 1.6 or less gallons of water per flush (gpf).  Relative to...
  • Conventional Toilets

    Conventional toilets are those that pre-date Energy Policy Act of  1992 (EPAct 1992) and use 3.5 or more gallons of water per flush.
  • Pressure-Assisted Toilets

    Pressure-assisted toilets use the pressure from the main water line to more efficiently empty the bowl and use less water.
  • Floor Mounted

    Floor mounted toilet partitions are structurally supported at the base by the floor and are easier to install. They can be made of plastic or met...