Denver Water has temporarily stopped drawing water from its largest reservoir as a precaution after a truck rollover that spilled 800-gallons of concrete dye into an upstream river.
Originally reported as a spill of car washing soap, officials later learned of the dye that contains iron oxide.
The spill turned the Snake River orange as HAZMAT crews worked to contain the spill. The river flows into Dillon Reservoir, the largest of Denver Water's ten major reservoirs.
Denver Water officials will conduct tests over the weekend and expect to draw water from it on Monday. Water supplies are not expected to be affected.
The driver, 25-year-old William Bishop, of Clifton, was treated at the scene for minor injuries