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Chicago River Turns Green for St. Patrick's Day Tradition

3/16/2026

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Summary

Story summary

On March 14, 2026, the Chicago River was dyed bright green during a St. Patrick's Day celebration by Chicago Journeymen Plumbers Local 130.
The dyeing operation began at 10 a.m., lasting about 45 minutes.
The dye, once used to detect leaks, transforms from orange to green on contact with water.
Thousands gathered to witness the spectacle, lasting several hours.
The tradition dates back to 1962 and symbolizes Irish culture in America.

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Story summary

On March 14, 2026, the Chicago River was dyed bright green during a St. Patrick's Day celebration by Chicago Journeymen Plumbers Local 130.
The dyeing operation began at 10 a.m., lasting about 45 minutes.
The dye, once used to detect leaks, transforms from orange to green on contact with water.
Thousands gathered to witness the spectacle, lasting several hours.
The tradition dates back to 1962 and symbolizes Irish culture in America.