UNIT 4 : WATER EFFICIENCY

Question 1

What are the Exemplary Performance requirements of WE-C Indoor Water Use Reduction?

Answer 1

Achieve 55% Indoor water use reduction.

Question 2

What action is required first to achieve WE C3, Cooling Tower Water Use?

Answer 2

Hire a water treatment professional to conduct a one-time water analysis to identify the concentration parameters of the condenser water.

Question 3

What 4 pieces of information about plumbing fixtures must be entered into the calculator when calculating the design case for indoor water use?

Answer 3

• type of fixture
• flush or flow rate
• manufacturer and model
• percentage of occupants using the fixture

Question 4

Indoor water use baseline case consists of what information?

Answer 4

Amount of water used based on only code minimum fixtures and fittings flow rates set by EPAct 1992

Question 5

What fixtures do NOT have the WaterSense label?

Answer 5

• tankless toilets
• composting toilets
• waterless toilets
• waterless urinals
• PUBLIC lavatory faucet

Question 6

What fixtures can have the WaterSense label?

Answer 6

• tank type toilets
• water using urinals
• PRIVATE lavatory faucets
• shower heads

Question 7

What alternative water source can be used for irrigation?

Answer 7

Reclaimed Wastewater
Gray Water
Swimming Pool Backwash Filter
Reefer Condensate
Rainwater
Stormwater
Foundation drain water
Steam System Condensate
Fluid Cooler Dishcharge
Food steamer discharge
Combination oven discharge
Industrial process water
Fire pump test water,
Municipally supplied teated waste water,
Ice machine condensate

Question 8

How is building level water meter data shared with USGBC on a monthly basis?

Answer 8

• through Energy Star’s Portfolio Manager

- through approved 3rd party data sources

Question 9

Which pieces of information must be provided in the plant species and water requirement narrative for WE P1, Outdoor Water Use Reduction?

Answer 9

• a description of the plants

- an indication of why the average rainfall will be sufficient

Question 10

What is required for meeting WE P1, Outdoor Water Use Reduction Option 2?

Answer 10

30% reduction in irrigation from baseline for peak watering month

Question 11

What is the requirement for meeting WE P2, Indoor Water Use Reduction?

Answer 11

20% AGGREGATE water consumption reduction from baseline

Question 12

What defines exemplary performance for WE P2, Indoor Water Use Reduction?

Answer 12

55% AGGREGATE water consumption reduction from baseline

Question 13

What non-potable water is acceptable for to achieve points for WE C1, Outdoor Water Use Reduction Option 2?

Answer 13

Graywater and rainwater

Question 14

When using alternative water sources for irrigation what should the water be tested for?

Answer 14

Salinity levels which can be harmful

Question 15

To achieve points for WE C1, Outdoor Water Use Reduction Option 2 what technology automatically earns 15% reduction?

Answer 15

The use of smart irrigation controls that meet WaterSense criteria

Question 16

Tool that calculates a baseline landscape water requirement (LWR) of a typical landscape?

Answer 16

EPA Water Sense Budget Tool

Question 17

Equipment that should be installed in cooling towers and evaporative condensers per WE-P Indoor Water Use Reduction?

Answer 17

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.

Question 18

What is the definition of landscape water requirement?

Answer 18

Total amount of water used during peak water season (summer) for landscaping areas.

Question 19

Required flow rate for Water Sense aerators in private lavatories?

Answer 19

At least .8 gpm at 20 psi

Max 1.5 gpm at 60 psi

Question 20

Sinks excluded from indoor water use reduction calculations?

Answer 20

Janitor sinks
Laboratory sinks
Commercial kitchen sinks
Medical sinks
Soiled utility room flushing/handwashing sinks
Clean utility room handwashing sinks