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Watch now: Santa Cruz River running red northwest of Tucson
- Jesse Tellez
Jesse Tellez
Digital Editor
- Updated
Federal and University of Arizona researchers added red dye to the Santa Cruz River on Tuesday morning as part of a study looking into sunlight's effect on chemicals and other materials in the water. The non-toxic dye was put in the river near West Ina Road and is expected to travel downstream towards Marana over the next few days.
Jesse Tellez
Digital Editor
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For Star subscribers: Researchers will use a nontoxic dye to help show whether sunlight can destroy various chemical compounds in the Tucson river water, including pharmaceuticals and personal care products.
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