Mill Creek water to be supplemented with groundwater from wells to meet demand
July 29, 2021
WALLA WALLA—The City of Walla Walla Water Division will soon supplement the drinking water supply by using water from one or more of the city’s seven groundwater wells. Drought conditions have caused below normal stream flows in Mill Creek.
Typically, 80-90% of Walla Walla’s drinking water is treated surface water from the Mill Creek watershed. The combination of high customer water demand, lack of rainfall, low streamflow, and the requirements to provide a minimum stream level at Kooskooskie for fish and wildlife has created the need for the well water.
With the turning on of wells,...