Chapter 7 - Water Efficiency Flashcards
Guideaerator
A water flow constrictor attached to the tip of an indoor water faucet to limit the amount of water that flows out of it.
baseline case
A standard from which a basis of change can be measured for improvement.
Blackwater
Water from toilets and urinals considered under all codes to be wastewater. Some states also consider water from kitchen sinks, showers, and bathtubs to be blackwater.
cooling tower
A structure that regulates air temperature in a facility by using water to absorb heat from air conditioning systems.
design case
The actual project design metrics that are compared to a baseline to show efficiency gains.
drip irrigation
Water delivered at a low pressure directly to the roots of a plant.
EPAct of 1992
WE Prerequisite - Indoor Water Use Reduction
Energy Policy Act of 1992 sets the maximum flush and flow rates in buildings:
-1.6 gpf in toilets/water closets
- 1.0 gpf in urinals
Evapotranspiration
Amount of water lost through evaporation in irrigation.
FTE
full-time equivalent
used to calculate number of occupants in a building with associated average daily water fixture use.
A building occupant who spends 40 hours per week in the project building.
Transient occupants have FTE values based on their hours per week divided by 40.
Graywater
Untreated household wastewater that has not come into contact with toilet waste. This includes wastewater from bathtubs, showers, bathroom sinks, and washing machines. It does not include wastewater from kitchen sinks or dishwashers.
Lavatory
A bathroom sink.
native and adapted species
Plants that are either native to the region or have adapted to the region and require little to no irrigation.
nonpotable water
Water collected from a variety of sources, such as rainwater, that has not been approved for human consumption but can be used for irrigation and toilet flushing.
Water pollution from diffuse land uses, rather than a single facility, and one of the biggest threats to surface water quality and aquatic ecosystems
potable water
Water treated to a standard that makes it safe for human consumption.
reclaimed water
Wastewater that has been treated and purified for nonpotable uses.
Submetering
The installation of submeters on water systems to allow buildings to track water usage trends, monitor fixture performance, and identify leaks.
water closet
a toilet
WaterSense labeled products are ____% more water efficient than average products.
20%
Xeriscaping
Landscaping designed to reduce or eliminate potable water use in irrigation through the planting of native and adapted species of vegetation and the use of other water-conserving techniques.
In the seven impact categories or LEED goals, water is listed how?
Protect and restore water resources
water balance approach
bases projected water usage on the annual amount of rainfall; so the building can use only as much water as it can harvest from rainfall
LEED v4 requires a minimum of a _____ reduction of the baseline for water used indoors.
20%
EPA Energy Star
WE Prerequisite - Indoor Water Use Reduction
WE Credit - Indoor Water Use Reduction (6)
EA Credit - Optimize Energy Performance
WE Credits
Prereq - Outdoor Water Use Reduction
Prereq - Indoor Water Use Reduction
Prereq - Building-level water metering
Credits
Indoor Water Use Reduction - 6
Outdoor water use reduction - 2
Cooling tower water use - 2
Water metering - 1
EPA WaterSense Water Budget Tool
WE Prerequisite - Outdoor Water Use Reduction
WE Credit - Outdoor Water Use Reduction (2)
requires projects use the tool to calculate the reduction from the baseline of outdoor water use
(2006)
