Infographic of where a cooling tower, building water treatment, municipal water supply, rainwater harvesting, and decorative fountain are featured near a building

Get a water systems operating permit

Extra vigilance is required around cooling tower operation. As occupancy loads are reduced, cooling towers may only run at short intervals, or not at all. Please ensure your cooling tower is operating in safe manner. Review best practices (879 KB)

To more effectively respond to incidents, mitigate health risks by pathogens (such as Legionella pneumophila), and ensure compliance with updated standards, operating permits help us and health authorities track new and existing:

  • Cooling towers
  • Water features
  • Non-potable water systems and other building water systems

Looking for an electrical annual permit? Review the steps and get an electrical annual permit

Ready to get your permit?

  1. Review what systems require an operating permit
  2. Review our guide on how to use the online permit system for operating permits (1 MB)
  3. Register for an online account (If you don't have an account.)
  4. Submit your application

Register and submit application

Types of operating permits

For additional information, contact: