When Is The Chicago River Dyed Green 2025. That tradition, which sees the chicago river dyed a shade of bright green, will continue this year thanks to the efforts of chicago journeymen plumbers local 130. Here's a very quick look at this year's dyeing of the chicago river — and the thousands of st.
The chicago river is officially green after the chicago plumbers’ union dyed the body of water with their secret, environmentally friendly dye in celebration of st. The group had hoped to.
