Dye Testing in Ward 1, City of Mississauga

By January 20, 2023January 24th, 2023Issues, Resources, Ward 1

January 2023

What are we doing?
The Region of Peel has retained Infrastructure Intelligence Services (I2S) to complete Dye Testing within your neighbourhood. The area to be tested is shown on the map.

What is Dye Testing?
Dye Testing is used to determine connectivity of downspouts to either the sanitary or storm sewers in the road. This is performed by pumping environmentally friendly dyed water into downspouts and documenting the outlet location of the dyed water. Outlet locations can include lawns, ditches, sewers and/or nearby waterways.

These investigations will confirm if roof downspouts that go into the ground are connected to the sewers in the road.

Testing is expected to begin on January 16, 2023 and is expected to last two (2) weeks.

What do I need to do?

• Inform the tenants of your property that the testing will be conducted. You may wish to circulate this notice.
• Field personnel will require access to the lot and rooftop of each building within the testing area to perform testing.
• Access inside buildings will NOT be required unless there is internal access to a roof.

What to expect during Dye Testing?

Bright coloured dyed water may be visible – the colours normally used are green, red and blue.

Day of Testing: Arrangements will be taken care of with a site contact. Depending on the number of drains on the roof, testing is expected to last 1-2 days.

Work Hours: Work will take place from 8:00am to 5:00pm, Monday to Friday. No after hours or weekend work is expected.

Testing Locations: If you have received this notice, your property has been selected for testing. Investigations are completely external on each downspout, access to the backyard may be required.

Dyed Water: The dyed water will have a very bright fluorescent appearance to help the contractor identify the outlet. There is no need for concern if you see the dye on your property, in the street or in close by waterways. The Ministry of Environment, Conservation and Parks as well as the Toronto and Region Conservation Authority have been made aware of the dye testing. The dye is environmentally friendly and commonly used for river and groundwater assessments.

Traffic Management: Minor impacts to traffic may be required but no lane closures are expected. The contractor’s testing vehicles will be parked on the side of the road during testing.

I have a question, who should I talk to?
For general inquiries please visit peelregion.ca or contact Region of Peel at 905-791-7800, ext. 4409. Should you have any further questions please contact Laura Gerencser at the Region of Peel at 905-867-6046 or laura.gerencser@peelregion.ca.

Thank you,
Wastewater Division
Public Works Department
Region of Peel