Water Efficiency (WE) Flashcards
What systems can be
submetered for WE Credit-Water
Metering?
Two or more of the following:
-Irrigation
-Indoor plumbing fixtures and
fittings
-Domestic hot water
-Boilers
-Reclaimed water
-Other process water
What percent of water
distribution must be
submetered for irrigation,
indoor plumbing fixtures,
domestic hot water, or other
process water?
80% must be submetered
What frequency must
metered data be compiled
for Building-Level-Water
Metering?
Monthly and annual
summaries
How long must a project
commit to sharing metering
data with USGBC and when
must the sharing begin?
A five-year period beginning
on the date the project
accepts LEED certification or
typical occupancy, whichever
comes first
What type of water is
municipally supplied
claimed/recycled water?
Using EPA’s WaterSense
Water Budget Tool
What minimum percent
reduction of outdoor water
use is required from a
calculated baseline?
30% reduction from the
calculated baseline for the
site’s peak watering month
How can reductions be
achieved for WE
Prerequisite Outdoor Water
Use Reduction?
- Plant species selection
AND - Irrigation efficiency
Alternative water sources
CANNOT be used for the
prerequisite
What areas are excluded
from outdoor water use
reduction calculations?
Nonvegetated surfaces
(permeable and
impermeable pavement)
are excluded. Athletic
fields, food gardens, and
playgrounds can be
included or excluded at
the project teams’
discretion.
What percent reduction is
required for WE Credit
Outdoor Water Use
Reduction?
50% from the calculated
baseline for the site’s peak
watering month.
How can reductions beyond 30% be
achieved for outdoor water use
reduction?
Any combination of efficiency,
alternative water sources, and
smart scheduling technologies
What reduction is automatically earned when installing smart irrigation controls for WE Credit Outdoor Water Use Reduction?
15% from the baseline
What indoor water use
reduction percent earns
exemplary performance?
55%
What must be conducted for
Cooling Tower Water Use?
A one-time potable water
analysis measuring at least
the required five control
parameters
What minimum number of
cooling tower cycles would
earn a project 2 points?
A 10-cycle minimum.
Any individual energy end
use that represents ______
percent of the total annual
consumption of the
building must have an
advanced energy meter?
10%
What is the default gender
ratio for indoor water use
reduction calculations?
1 to 1; i.e. 50/50 male to
female
What fixtures and fittings
must be included in the
indoor water use reduction
calculations?
Water closets, urinals,
lavatory faucets, showers,
kitchen sink faucets, and pre-
rinse spray valves
What is WaterSense?
WaterSense is a partnership
program sponsored by EPA,
helping consumers identify
water-efficient products and
programs.
Tool that calculates a baseline landscape water requirement (WR) of a typical landscape?
EPA Water Sense Budget Tool
Landscape Water requirement information is used for which WE-Prerequisite/credit?
Outdoor Water Use Reduction
What Equipment should be installed in cooling towers and evaporative condensers per WE-Prerequisite-Indoor Water Use Reduction?
Make up water meters
-Conductivity controllers and overflow alarms
-Efficient drift eliminators reduce drift to a maximum of .002% of recirculated water volume for counterflow towers and 0.005% of recirculated water flow for cross-flow towers.
Types of fixtures that can have Water Sense labels?
Tank type toilets
Water using urinals
Private lavatory faucets
Shower heads
What types of Fixtures not labeled by Water Sense and must comply with percentage reduction criteria for WE-Prerequisite:
Indoor Water Use Reduction?
Tankless toilets
Composting toilets and waterless toilets
Waterless urinals
Public lavatory faucets
What area should be excluded from landscape area calculations for WE Credit-Outdoor Water Use Reduction?
A. Permeable pavement
B Food garden
C. Vegetated playground
D Athletic field
A.
Vonvegetated surfaces, such as permeable or impermeable pavement, should be excluded from landscape area calculations.
Athletic fields and playgrounds (if vegetated) and food gardens may be included or excluded at the project team’s discretion.
What Information is required by the USGBC Indoor Water Use Calculator in order to determine water consumption ?
Project occupancy numbers
Gender ratio
Days of operation
Fixture types used in the project
Provide 3 examples of potable water sources that must be metered for a project pursuing LEED
certification.
Public Water Supply
On-site Well
On-site potable water treatment system
What percent reduction should a project team assume if they specify weather-based irrigation controllers to achieve WE- Outdoor Water Use Reduction?
15%
What is the definition of landscape water requirement?
Total amount of water used during peak water season (summer) for landscaping areas.