LEED Water Efficiency

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What strategies will not reduce the use of potable water for irrigation?
Replacing permeable pavement with turf grass
*Extra: What strategies WILL reduce the use of potable water for irrigation?
Installing native plants; Using rainwater for irrigation; and Using gray water for irrigation
The baseline water use of a lavatory faucet is:
2.2 gpm (8.3 lpm)
What type of plants do the most to help reduce water use for landscaping?
native plants
Indoor water use reductions require projections based on which of the following:
occupants' usage
If a project owner wants to create a landscape with plants that require watering, which of the following is the minimum outdoor water reduction from a baseline required for a new office project?
30%
A restaurant is located on the second floor of a building. How can the project team decrease indoor water use demand?
install high efficiency toilets
What can help reduce indoor potable water use?
Installing reduced-flow aerators on lavatory faucets
Which of the following is a type of graywater?
Wastewater that has not come in contact with toilet waste or kitchen sinks
Designers and builders can construct green buildings that use significantly less municipal water than conventional construction by performing which of the following actions?
incorporating native landscapes that eliminate the need for irrigation; installing water-efficient fixtures; and using gray water and/or rainwater for no potable water needs
Potable water is defined as:
water that meets or exceeds EPA's drinking water standards
What type of water is rainwater?
non-potable water
Who decides if water from showers can be used for irrigation?
local authorities with jurisdiction in the area
Submeters are a strategy to reduce outdoor water use by:
providing water consumption tracking and leak identification
What types of water can NOT be used for flushing toilets?
blackwater
Which of the following are strategies for conserving potable water?
installing a dual flush toilet
What landscaping strategy will best eliminate the need for irrigation?
xeriscaping
What information would a project team need to successfully implement both rainwater management and outdoor water use reduction?
precipitation data
What is an environmental benefit of using graywater for irrigation?
preserving aquifers
A project that reduces the amount of wastewater transported off site helps achieve which of the following?
a reduction in demand for wastewater treatment infrastructure; and a reduction in energy required to treat wastewater
Which of the following has the highest priority in LEED?
indoor water use reduction
Which of the following reduces outdoor water use while also improving the triple bottom line?
Installing a landscape that doesn't require a permanent irrigation system
Which of the following are sources of graywater?
showers; and washing machines
What unit of measurement is used for a lavatory faucet?
Gallons / liters per minute
What minimum indoor water savings are LEED projects required to achieve?
20%
Rain gardens, vegetated rooftops, and permeable pavements are strategies to manage rainwater and contribute to:
low impact development
An owner is questioning the additional costs of submetering of a mixed-use project's water systems. For what reason should the submeters be installed?
identifies disparities between how a project's water-based systems are designed to operate and how they actually perform
Occupancy calculations may be needed for which of the following project documentations?
indoor water use; and bicycle facilities
Water that is used for dishwashing, clothes washing, and ice making is considered what type of water?
process water
What types of products should be selected for reducing indoor water use?
WaterSense; and ENERGY STAR
What unit of measurement is used for toilets?
gallons per flush (liters per flush)
The baseline water use of a urinal is:
1.0 gpf (3.8 lpf)
Which of the following would a landscape architect use to measure the outdoor water use of a project?
EPA WaterSense Water Budget Tool
Which of the following is considered potable water?
water from a local well that meets EPA's drinking water quality standards that is used for lavatory faucets
Which of the following is effective at reducing potable water use indoors?
installing low-consumption flush fixtures and low-flow rate faucets
Which of the following project designs would help with both rainwater management and municipal water use reduction?
rainwater harvesting
Harvesting rainwater can help with what project areas?
reducing runoff
What project design strategy would minimize a project's water usage the most?
Installing a landscape that needs no irrigation
The addition or increasing the use of graywater in a building can help with:
reducing potable water used by urinals
Which of the following does a facility operator need in order to optimize water consumption?
submetering of water-using systems
The baseline water use of a toilet is:
1.6 gpf (6 lpf)
What strategy to control and reduce runoff will hold water and reduce the rate of runoff?
direct runoff into dry ponds
Which of the following occupants would be classified as an FTE?
a full-time cafeteria worker
An owner of a large 1970's apartment building wants to renovate the space to make it green. The cost of the replacing all of the porcelain plumbing fixtures is going to be cost-prohibitive for the owner. What can the project team suggest as an alternative to reduce potable water use?
install new flush valves ; and install new low-flow aerators
What type of water can NOT be used for irrigation purposes?
blackwater
*Extra: What type of water CAN be used for irrigation purposes?
Potable water; Rainwater; and Laundry water
WaterSense labels apply to what products?
toilets; private lavatory faucets; and shower heads
Which factor would increase outdoor water use?
using turfgrass for groundcover
Which of the following are often considered types of blackwater?
water from kitchen sinks; and dishwasher water
Which of the following is the appropriate way to document whether a bathroom sink qualifies for an indoor water use reduction?
by fixture cut sheets
During the integrative process, which of the following improvements in water efficiency would most likely need to be researched to confirm that they are legal to implement within the project?
alternative water sources
What are the benefits of reducing potable water use in buildings?
decreased building operating costs; and reducing drawdown of water from water bodies and aquifers
To help with water use reduction in LEED, a lavatory faucet must use less water than the rates set by:
EPAct of 1992
What is a strategy for water efficient landscaping?
use drip irrigation
Which of the following would be considered graywater?
untreated laundry water
Which of the following is NOT a strategy for reducing potable water use for irrigation?
install building-level metering
*Extra: Which of the following ARE strategies for reducing potable water use for irrigation?
Use treated wastewater; Only use grass for play fields or other activities that require turf; and Install smart-sensor technology
Indoor plumbing fixtures need to have which of the following labels for LEED?
WaterSense
What types of water should be prioritized for irrigation?
graywater; and rainwater
What can help reduce indoor potable water use?
composting toilets
For which of the following credit areas would a site plan be submitted for documentation?
outdoor water use reduction
What is the EPAct of 1992 used for?
to set the baseline water flow requirements of toilets and fixtures
A rainwater harvesting system can help with:
reducing potable water use indoors; and runoff management
Which of the following occupants would be classified as FTEs?
a librarian; and a receptionist
In LEED which approach is taken in the Water Efficiency category to conserve water?
efficiency first
In many buildings the most significant savings associated with water efficiency result from:
reduced energy costs
The installation of water submeters in a building will provide the facility manager with the ability to do each of the following EXCEPT:
evaluate the quality of captured rainwater
If a developer is looking for water efficient appliances to install in residences what label should they look for on the appliances?
ENERGY STAR