How many points can all other projects achieve for Outdoor Water Use Reduction?

The maximum points available for Outdoor Water Use Reduction under LEED BD+C V4 is indeed one to two points. This credit aims to encourage projects to reduce the use of potable water for landscaping purposes, which can be achieved through various strategies such as efficient irrigation systems, selecting native and drought-resistant plants, and implementing rainwater harvesting techniques.

To earn these points, a project must demonstrate a reduction in outdoor water use compared to the baseline established by LEED guidelines. Projects can achieve one point for a reduction of 30% and two points for a reduction of 50% or more. The emphasis on promoting sustainable landscaping practices is integral to LEED's goals of reducing overall water consumption and promoting ecological health.

Understanding this credit helps in recognizing the importance of water conservation in building design and its impact on the environment, which is an essential aspect of LEED certification. The other options suggest a wider range of points available than what is permissible according to the LEED standards for this specific credit.