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Stay-at-home orders for Arapahoe County are set to expire on May 8, 2020. As businesses and public buildings start to re-open, ECCV recommends these properties flush their building’s water systems before the building is reoccupied. This removes any stagnant water and fills pipes with fresh water. When a building’s plumbing system is not regularly used, water can sit in pipes and its quality degrades over time. ECCV recommends commercial and public facility customers work with building engineers and facility managers to conduct the following flushing process.

It is important to follow these steps in order:

  1. Determine where water enters the building.
  2. Starting from the farthest point away from where water enters the building, turn on the cold water at each point of use (breakroom sinks, drinking fountains, utility closets, restrooms, etc.). For example, if water enters the building on the ground floor, start on the highest floor.
    • Let the water run until it has gone from slightly warm to cold. When the water runs cold, the line has been successfully flushed.
    • Repeat the process at each faucet, spigot, water fountain, etc.
  3. Flush hot water storage tanks (boiler and/or hot water tanks) per the manufacturer’s instructions. This will replace any stagnant or discolored water with fresh water.
  4. Repeat Step 2, but with hot water. Wait for the water to turn from warm to hot.
  5. Flush and perform preventative maintenance on any other systems including cooling towers or additional water treatment systems per the manufacturer’s instructions.


Buildings can once again be occupied once these steps are completed. The Centers for Disease Control and Prevention have also compiled guidelines for specific industries.

Have additional questions about your account? Contact ECCV at 303-693-3800 or