Commercial Establishments
Note: This information supersedes the “Issuing and Rescinding a Boil Water Advisory” portion of the Cryptosporidium and Water Handbook.
During a Boil Water Advisory
When The Boil Water Advisory is Cancelled
- Make sure equipment with water line connections (e.g., filters, post-mix beverage machines, spray misters, auto-fill coffee/tea makers, instant hot water heaters, ice machines, glass washers, dishwashers, etc.) is flushed, cleaned, and sanitized according to manufacturers’ instructions.
- Managers of large buildings with water-holding reservoirs should consult their facility engineer and health department about draining the reservoir.
- Flush pipes and faucets. Run cold water faucets continuously for at least 5 minutes.
- Flush drinking fountains. Run water continuously for at least 5 minutes.
- Run water softeners through a regeneration cycle.
- Drain and refill hot water heaters set below 113°F.
- Change all point-of-entry and point-of-use water filters, including those associated with equipment that uses water.
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Page last reviewed: April 2, 2015