Running water

Be Sure to Flush Your Pipes Before Reopening Your Building or Facility

When buildings are vacant or operating at significantly reduced capacity for a week or more, it can result in poor water quality within the internal plumbing of the building. To ensure proper water quality is maintained within the facility, it is recommended the internal plumbing is thoroughly flushed before the building is opened to employees and customers.

Consider the following steps when flushing your facility:

  1. Flush all faucets (remove faucet aerators, if possible) for at least 10 minutes.
  2. Flush cold water first. Then flush hot water until it reaches its maximum temperature.
  3. Follow manufacturer recommendations to flush water fountains, hot water tanks, hot water recirculating loops, ice makers, dishwashers, humidifiers, and cooling towers. 
  4. A final flush is recommended in the 24 to 48 hours before a building officially reopens.

Flushing pipes is a precaution that should be taken after any facility shutdown, and more guidance is available at these links: 



Public Utilities - 919-996-3245