Flushing water lines before business resumes

Updated May 13, 2020
Flushing water lines before business resumes
As our economy begins to open back up, the U.S. Centers for Disease Control and Prevention (CDC) and California State Water Resources Control Board (State Water Board) have issued guidance for reopening facilities closed for an extended period during the COVID-19 pandemic. Taking precautionary steps will ensure the safety of building water systems and devices.

Businesses that are reopening after an extended shutdown should consider flushing plumbing fixtures of stagnant water before resuming normal operations.

Stagnant or standing water has the potential to cause conditions that increase the risk for growth and spread of Legionella and other biofilm-associated bacteria. Flushing involves opening taps and letting hot and cold water run through all points of use (such as faucets and showerheads) for a sufficient amount of time. The goal is to replace stagnant water in interior pipes and/or outlets with fresh water.

Learn about recommended steps here.