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Health Department and DOB

Cooling towers

Cooling towers are registered with DOB, inspected and tested on a schedule while they run, and certified every year by November 1.

The clock

When it comes due

  • Annual certification: by November 1
  • Disinfection: July 1 to August 31
  • While operating: inspection every 90 days, Legionella test every 31 days
Who it applies to
Buildings with a cooling tower
When
  • Register with DOB before the tower first operates
  • Every year by November 1, file the annual certification, or a statement of non-operation
  • While it operates: a compliance inspection at least every 90 days, Legionella testing within 3 to 14 days of startup and at least every 31 days, cleaning at least twice a year, and disinfection of every operating tower between July 1 and August 31
Who does it
A Qualified Person develops, updates and certifies the maintenance program and plan, and does the 90-day inspections. Disinfection is done by a certified pesticide applicator
What happens next
  • A Legionella result of 1,000 CFU/mL or more is reported to the Health Department within 24 hours
  • Records stay on site at least three years
  • Tell DOB within 30 days if a tower is removed or discontinued
  • Failing to register, certify or report a discontinued tower can bring a fine of up to $10,000

What Stoop does

  • November 1 on the calendar every year
  • The 90-day inspections and monthly tests on a schedule
  • Records kept for at least three years

Find out before the fine.

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