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The original item was published from 5/28/2020 2:37:38 PM to 7/2/2020 12:00:02 AM.

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City of Newton - Utilities (Water Pollution Control & WaterWorks)

Posted on: May 28, 2020

[ARCHIVED] Recommendations regarding reopening of schools and buildings flushing of plumbing pipes

Newton WaterWorks remains committed to keeping you informed as we continue our work to deliver clean, safe and reliable water service to customers during the COVID-19 public health emergency.

Extended periods of inactivity in buildings can cause lead leaching or legionella growth in water pipes and taking proper steps can help minimize potential exposure to both these contaminants. As buildings reopen, businesses, school districts and property management teams will begin the process of restarting building systems that have been dormant for a significant amount of time. Proper reopening procedures help in verifying that water systems and equipment are in safe working order.

The general purpose of flushing is to bring fresh water into all sections of a building. This will require running water through all fixtures long enough to replace stagnant water. The time needed to complete this is location-specific and may range from a few minutes for smaller buildings to more than 30 minutes for larger or more complex plumbing systems.

Newton WaterWorks encourages large building owners and operators to adopt a proactive approach that includes proper flushing procedures, adjustments of hot water temperatures, and proper maintenance of building plumbing and heating/cooling systems. Proper flushing of plumbing before reoccupying these buildings is essential to maintain water quality in the internal plumbing system and should be performed biweekly while the building is closed, if possible, and again the days immediately prior to opening.

Consistent with EPA and industry guidance, Newton WaterWorks recommends bringing fresh water into the building and flushing individual fixtures, including:

  • Toilets: Flush at least twice
  • Faucets: Run both hot and cold at full flow for at least 2 minutes. Longer times may be needed depending on location.
  • Showers: Run both hot and cold water at full flow for at least 2 minutes. Longer times may be needed depending on location.

For additional information on flushing you can go to the EPA website; the Center for Disease Control website or the American Water Works Association.

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