Responding to Water Stagnation in Buildings With Reduced or No Water Use: A Framework for Building Managers

Stagnation within building water systems is the condition in building plumbing when water is not being used and water remains still within the plumbing network. During stagnation, water quality issues may develop. The purpose of this document is to help building managers assess and react to building water stagnation. In particular, this report provides response options to building water stagnation, such as remedial flushing, routine flushing, and more. Additionally, it discusses hazards potentially related to stagnation, such as the release of metals, like lead and copper, and waterborne pathogen growth.