Name two common Water Efficiency strategies used in LEED projects.

• A. High-flow fixtures and expanded irrigation
• B. Low-flow fixtures and irrigation efficiency; non-potable water reuse when feasible.
• C. Using only potable water for landscaping.
• D. Ignoring irrigation scheduling.

Answer: (B)

Water Efficiency in LEED centers on cutting potable water use by addressing both indoor and outdoor demands and by tapping non-potable sources when feasible. The two common strategies are installing low-flow fixtures and improving irrigation efficiency, with non-potable water reuse used where feasible. Low-flow fixtures—such as toilets, urinals, faucets, and showers—dramatically reduce indoor water consumption right from the start. Outdoor water use drops when irrigation is made efficient through smart controls, weather-based scheduling, properly designed zones, efficient nozzles, and drought-tolerant landscaping. When feasible, using non-potable sources like captured rainwater or graywater for irrigation or toilet flushing further lowers potable water demand. The other options either increase water use, rely on potable water for landscaping, or neglect scheduling, which undermines LEED efficiency goals.