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Water Efficiency Flashcards

1
Q

How many total points can be earned max for the Water Efficiency category?

A

11

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2
Q

How many prerequisites does the Water Efficiency category have?

A

3 -
Outdoor water use reduction
Indoor water use reduction
Building level water metering

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3
Q

What are the credit categorizes for Water Efficiency?

A
  • outdoor water use reduction
  • indoor water use reduction
  • cooling tower water use reduction
  • water metering
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4
Q

What is the first thing that needs to be calculated for indoor water use?

A

Baseline

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5
Q

Baseline flow & flush rates are specified by what act?

A

Energy Policy Act of 1992 (EPAct 1992)

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6
Q

What is used to determine the occupant usage of fixtures and fittings?

A

Full time equivalent (FTE)

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7
Q

For outdoor water usage, how is the baseline calculated?

A

Landscape water requirement (LWR)

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8
Q

What is the Landscape Water Requirement (LWR)?

A

The amount of water that the landscape will require during the site’s peak watering month

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9
Q

To calculate the LWR, projects use what tool?

A

EPA’s WaterSense Water Budget Tool

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10
Q

What is the EPA’s WaterSense Water Budget Tool?

A

Online calculating tool which the project team needs to input the types of vegetation, area of each vegetation, project location & irrigation system type

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11
Q

Indoor potable water consumption can be reduced by using what?

A

Water efficient fixtures and fittings and/or using non potable water sources where appropriate

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12
Q

______ is a program developed by the US EPA to identify high performance, water efficient fixtures and fittings

A

WaterSense

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13
Q

What types of fixtures and fittings can be installed to decrease potable water consumption?

A 
Dual flush toilets
High efficiency toilets 
Waterless urinals
Composting toilets
Low flow shower heads & faucets 
Faucets with low flow aerators &/or motion sensors
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14
Q

What types of water can be used for the flush water of toilets & can decrease potable water consumption?

A

Rainwater

Gray water

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15
Q

Some states do not allow what kind of water as toilet flush water?

A

Gray water

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16
Q

What is gray water?

A

Untreated household water that did not come into contact with toilet waste
Ex: used from bath water, showers, bath waste bins, laundry

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17
Q

What is black water?

A

Used water that has come into contact with waste

Ex: water collected from urinals & toilets

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18
Q

What is reclaimed water?

A

Former black water that has been treated and purified for reuse & can even be used for irrigation

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19
Q

What is process water?

A

Water used by mechanical or other types of systems in buildings such as cooling towers or medical equipment

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20
Q

What 3 types of water can be used as process water to contribute to reducing potable water consumption?

A

Reclaimed water
Harvested rainwater
Gray water

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21
Q

Define a closed loop system

A

System that doesn’t produce any waste by circulating the same median

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22
Q

Define an open system

A

Systems that constantly consume other items, use them & produce waste at the end

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23
Q

Open loop water systems require outside water, it is known as what?

A

Makeup water

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24
Q

What is makeup water?

A

Water used to replace the lost water in open systems from evaporation & blowdown

25
When doing water use calculations, the water usage of flush fixtures such as urinals is measured in _________
Gallons per flush
26
For flow fixtures (ex: sink faucets, shower heads, aerators), the water usage is measured in _____
Gallons per minute
27
How can water consumption be reduced for irrigation?
- water wise landscaping design 📐 - water efficient irrigation technologies 🚜 - non potable water use 💧 - submeters to track usage 🧭
28
Type of landscaping that doesn’t need any irrigation
Xeriscaping
29
Careful plant selection can contribute to outdoor water use reduction with the use of ____ & ____, as well as clearing out ____
Native & adaptive plants | Invasive plants
30
What landscaping technique helps keep plants cool & prevent evaporation?
Mulching
31
What are 3 types of high performance irrigation technologies to consider for water use reduction?
Drip irrigation systems Bubbler distribution systems Chanel water directly to roots system
32
Types of microirrigation systems that drip water to the roots of plants to minimize the use of irrigation water and fertilizers
Drip irrigation systems
33
What is the most water efficient system with a short payback period?
Drip irrigation system
34
When is the best time to perform irrigation?
Mornings when it is cool
35
How is a landscape that doesn’t require irrigation defined? (Hint: time)
Landscape that does not need any irrigation beyond a max of a 2 year period
36
What may be included or excluded from LEED outdoor water use calculations according to the project team’s decision?
Athletic fields & vegetated playgrounds
37
LEED requires all projects to reduce the baseline outdoor water usage by ___% from the calculated baseline for the site’s peak watering month
30%
38
If all the installed fixtures and fittings do not exceed WaterSense max levels, projects can earn the indoor water usage pre req by only documenting their fixtures’ & applicable appliances’ ___ or ____
Product cut sheets or fixture schedules
39
What are the most water consuming items in a building?
Appliances & process equipments
40
What are considered Fixtures or Fittings?
Toilets Urinals Faucets Showerheads
41
What are considered Appliances?
Laundry machines Dishwashers Pre rinse sprays Ice machines
42
What are considered Process items?
HVAC | Cooling towers & evaporative coolers
43
What are the baseline water consumptions of a toilet and a urinal?
Toilet - 1.6 gpf | Urinal - 1.0 gpf
44
LEED requires all projects to reduce the baseline indoor water usage ___% by utilizing more efficient fixtures and fittings with the use of WaterSense labeled products
20%
45
____ will collect and analyze data in order to identify common traits among high and low performers and will share its findings with the project teams so they can improve their performance
USGBC
46
How long should the whole project water data be shared with USGBC?
5 years, starting the date the project accepts the LEED certification or typical occupancy, whichever comes first
47
How often should metered water data be collected?
Monthly & annually
48
In the outdoor water use reduction category, projects will be awarded points if they can make a __% or __% reduction from the baseline
50% or 100%
49
What are considered alternative water sources?
- reclaimed wastewater - gray water - captured rainwater & stormwater - swimming pool backwash water - refrigeration system condensate & fluid cooler discharge - foundation drain
50
Appliances and process water equipment should meet ____ requirements
ENERGY STAR
51
Define Blowdown
Removal of the cooling tower’s water in order to minimize deposit of scales
52
What kind of water can be used in cooling towers to reduce potable water usage?
Recycled non potable water
53
What are the 6 subsystems LEED requires to meter for advanced metering of at least 80%?
- irrigation - indoor plumbing fixtures & fittings - domestic hot water - boiler (annual use 100,000 Gal) - reclaimed water - other process water
54
What specifies baseline flow and flush rates?
EPA act 1992
55
What does the EPAct 1992 do?
Specifies baseline flow & flush rates
56
What is rainwater harvesting?
Collects & filters rainwater to be reused as an alternative to potable water
57
In some states, water that has come into contact with dishwashers & kitchen sinks is considered ____
Black water
58
Installing sub meters can reduce overall building water use consumption by what amount in the first few months?
30-40%

LEED GA (12 decks)

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