ENV SP Water Conservation and Management 1 — Questions and Answers
Question 1: Under the Envision framework, which credit category primarily addresses reducing net water consumption in infrastructure projects?
- Natural World (NW)
- Resource Allocation (RA) (Correct answer)
- Climate and Resilience (CR)
- Quality of Life (QL)
Correct answer: Resource Allocation (RA)
Resource Allocation (RA) is the Envision credit category that addresses reducing net water consumption and protecting freshwater resources.
Question 2: Which Envision credit specifically focuses on reducing potable water use during the operational phase of an infrastructure project?
- RA1.1 – Reduce Net Water Consumption (Correct answer)
- NW2.2 – Protect Wetlands and Surface Water
- RA1.3 – Reduce Stormwater Runoff
- QL2.3 – Provide for Community Safety
Correct answer: RA1.1 – Reduce Net Water Consumption
RA1.1 – Reduce Net Water Consumption targets reductions in potable water use during a project's operational life.
Question 3: What is the primary goal of water recycling and reuse strategies in the context of the Envision framework?
- Increase stormwater runoff volumes
- Reduce dependency on potable water sources (Correct answer)
- Eliminate the need for green infrastructure
- Maximize groundwater extraction rates
Correct answer: Reduce dependency on potable water sources
Water recycling and reuse reduces dependence on potable water supplies, conserving freshwater resources for both ecological and community needs.
Question 4: Which metric is most commonly used to evaluate a project's net water consumption under Envision credit RA1.1?
- Gallons per acre of impervious surface
- Percentage reduction from a baseline potable water use (Correct answer)
- Total rainfall captured per year
- Number of water fixtures installed on site
Correct answer: Percentage reduction from a baseline potable water use
RA1.1 evaluates performance as a percentage reduction in potable water use compared to a conventional baseline project.
Question 5: In sustainable infrastructure design, 'net zero water' refers to a project that:
- Uses no water of any kind during construction
- Returns as much water to the watershed as it consumes (Correct answer)
- Eliminates all stormwater from the site
- Relies exclusively on desalinated water
Correct answer: Returns as much water to the watershed as it consumes
Net zero water means the project offsets its water consumption by returning an equivalent volume to the natural hydrological cycle.
Question 6: Which on-site water source is most commonly harvested and treated for non-potable reuse in infrastructure projects?
- Groundwater extracted from deep aquifers
- Rainwater and stormwater runoff (Correct answer)
- Municipal potable supply overflow
- Desalinated seawater
Correct answer: Rainwater and stormwater runoff
Rainwater and stormwater runoff are the most accessible on-site sources harvested for irrigation, toilet flushing, and other non-potable uses.
Question 7: Which design approach best supports freshwater resource protection by mimicking natural hydrological processes?
- Maximizing impervious pavement to shed runoff quickly
- Installing low-impact development (LID) techniques (Correct answer)
- Increasing stormwater pipe diameter for faster conveyance
- Directing all runoff directly to combined sewer systems
Correct answer: Installing low-impact development (LID) techniques
Low-impact development (LID) techniques such as bioswales, permeable pavement, and rain gardens mimic natural hydrology to protect freshwater resources.
ENV SP Water Conservation and Management 1
Under the Envision framework, which credit category primarily addresses reducing net water consumption in infrastructure projects?