Final answer:
The thresholds for WEc Outdoor Water Use Reduction are based on the percentage of total available water used, with less than 10% use representing the highest efficiency rating. The EPA's WaterSense program supports water conservation by certifying efficient products and encouraging sustainable habits.
Step-by-step explanation:
The thresholds for achieving points in WEc Outdoor Water Use Reduction are determined by the percentage of water withdrawal in relation to total available water. Practices and products that contribute to the efficient use of water can earn points under the Water Efficiency (WE) category in certification programs such as LEED. To encourage water efficiency, the U.S. Environmental Protection Agency (EPA) introduced WaterSense, a program that certifies products like high-efficiency toilets and irrigation equipment that help conserve water.
Water Efficiency Scoring:
- More than 40% of total water availability used would receive the lowest score, indicating poor water use reduction.
- Usage between 40% to 20% is better, but still not ideal.
- Using 20% to 10% of the available water is a significant improvement.
- Using less than 10% of the total available water is the goal for the highest water efficiency rating.
Actions to conserve water include allowing a larger indoor temperature range, conserving water via shower habits, and using efficient devices certified by the WaterSense program. Challenges to water conservation may include lack of incentives or awareness. Solutions may require introducing incentives for individuals to adopt more water-efficient habits and technologies.