Green Plumbing

Answer: A - Commercial water audits in an office building occupied Monday through Friday should be reasonably based on 250-260 working days per year, in contrast to the 365 days per year for residential water audits. This will vary to some extent based upon the building and its tenants; however, including days in which the building is unoccupied would confound findings. Certain water consumption activities such as landscape irrigation may continue regardless of occupancy and require accommodation in the audit as well.