A carwash runoff incident turned Richardson Creek into a shocking shade of red over the weekend, city officials confirmed. Soap from a nearby carwash was discharged into Floyd Branch Creek, turning the waters into an unnatural hue that caught the attention of locals and authorities. Richardson city officials worked swiftly to address the environmental scare, with the red detergent spill being traced to the Clean and Shine Carwash, as reported by WFAA.