The City of Stratford is giving you a heads up as it continues work on the Romeo Arch Storm Sewer Rehabilitation.

As work was being done last week, officials say a green dye was used to test for leaks.

Those in the area might notice a green dye entering the Avon River at the storm sewer outlet near the Central flats at TJ Dolan Drive.

They say its a standard dye, which is bio-degradable and has no adverse impact on the environment.