SPOKANE, Wash. — Don’t be alarmed if you see bright red water flowing through the Spokane River on Tuesday.
The Spokane County Regional Water Reclamation Facility (SCRWRF) will conduct the dye tracer test on Aug. 5, from 11 a.m. to 3 p.m. using Rhodamine WT, an environmentally safe red dye added to treated wastewater before it enters the river.
SCRWRF said the test fulfills requirements under the facility’s National Pollutant Discharge Elimination System permit issued by the Washington State Department of Ecology. Water specialists will use the dye to study how treated wastewater mixes with river water and interactions with the Spokane Valley-Rathdrum Prairie Aquifer…