LEED AP with Operations and Maintenance (O+M ) Practice Exam

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For a project that decides to meter alternative water sources to comply with WE Prerequisite Indoor Water Use Reduction - Option 2, what is required?

Submeter all fixtures
Record data for 100% of fixtures
Install submeters for 80% of fixtures or record data
Use only potable water for all fixtures

The correct answer is: Install submeters for 80% of fixtures or record data

To comply with the Indoor Water Use Reduction – Option 2 under the Water Efficiency (WE) Prerequisite, the requirement is to install submeters for 80% of fixtures or record data for those fixtures. This option allows the project to track water use for a significant portion of its total water fixtures, ensuring that any water savings or management strategies can be effectively measured and analyzed. This approach facilitates the collection of accurate data on water use, helping to identify areas for potential reduction and to track performance over time. By focusing on at least 80% of fixtures, the project can still gain valuable insights and still demonstrate commitment to sustainable water management practices without necessitating full submetering for all fixtures. The other responses do not meet the prerequisite in the same way: monitoring all fixtures or only using potable water does not align with the aim of understanding and managing alternative water sources effectively. The correct choice reflects the balance necessary between comprehensive measurement and practicality in implementation for compliance within the LEED framework.