Property owners, developers and contractors can apply for a permit to have the City turn a fire hydrant on and off in order to measure the flow rate and pressure of a hydrant between April 15 (pending suitable weather*) and November 15. The last day to apply for a Fire Hydrant Flow Test Permit** is November 1. Application and payment must be made at least 10 business days in advance of the desired flow test date.

*The weather must be above zero degrees Celsius to conduct a fire hydrant flow test.

**Flow tests are often needed to help applicants determine how to configure or upgrade a property’s private fire flow system.

Permits during the off-season (November 15 to April 15) are granted on a case-by-case basis and applicants must adhere to strict criteria. If you require a permit during the off-season period, please contact for an exemption.

Application and payment must be made at least 10 business days in advance of the desired flow test date. Once the application and payment are processed, you will receive a receipt, the permit(s) and Customer Service Request (CSR) number(s) for future reference.

Application and payment can be made in person at:

Toronto Water Customer Service Counter
North York Civic Centre
5100 Yonge St., 2nd floor
Hours: Monday – Friday | 8:30 a.m. – 4:00 p.m.

Information needed to apply

  • Contact name, address and telephone number
  • Location(s) of the requested hydrant(s)



The fee for a Fire Hydrant Flow Test Permit is approved by Toronto City Council annually. The fee for 2019 is $333.71.

Methods of payment for online applications

If you are applying online, payment must be made by:

  • credit card (American Express, VISA or Mastercard)

Methods of payment for in-person applications

If you are applying in person, payment can be made by:

  • cash
  • debit card or credit card (American Express, Visa and MasterCard)
    • The name on the card must match the person submitting the application
  • bank draft or money order made payable to “Treasurer, City of Toronto”, or
  • cheque:
    • Less than 1,000: Personal cheque made payable to “Treasurer, City of Toronto”
    • Equal to and greater than $1,000: Certified cheque made payable to “Treasurer, City of Toronto”

The payment must be made by one payor. Cheques from multiple different names or companies will not be accepted.

Toronto Water staff will call you within four business days of completing the application to:

  • confirm the location of the hydrant(s) to be tested
  • confirm the contact name and information for the certified contractor(s) that will conduct the test(s)
  • schedule a time to test the hydrant(s). Appointments can be made between 8 a.m. and 8 p.m., Monday to Friday

The certified contractor must:

  • meet staff on site at the agreed upon date and time
  • connect the test device and fittings to the hydrant

Once Toronto Water inspects and approves the above, staff will turn the hydrant on so that the contractor can conduct the test. Once complete, staff will turn the hydrant off.

  • Requests must be made at least 24 hours before the scheduled appointment.
  • Please contact the Toronto Water staff who booked the test.
  • If cancelling, the permit fee will be refunded by cheque, which will be sent to the applicant within six to eight weeks of the cancellation date.

Applicants are responsible for:

  • supplying all equipment to conduct the fire flow test (i.e. gate valve, pitot and pressure gauge, etc). Toronto Water staff are only responsible for turning the hydrant on and off.
  • ensuring public safety when conducting the test. This includes supplying any barriers or other protective measures, as needed.
  • protecting public safety when the water is on. If staff deem public safety to be at risk, the permit may be cancelled.
  • ensuring the contractor hired to conduct the flow test is certified.
  • any claims that may arise while the hydrant was in use. Applicants must agree to compensate and hold the City of Toronto harmless for any claims.
  • ensuring that hoses do not cross roadways or sidewalks.

Hydrants can only be operated by City staff. Any unauthorized use of fire hydrants is considered water theft and can result in enforcement of the Water Supply By-law and possible prosecution.