Well 9 Groundwater Source and Potential Taste and Odor
Thursday, November 16, 2023

On November 6th, 2023 the District increased the volume of water pumped from the Well 9 groundwater source to meet water right requirements set by the Department of Ecology. This well has elevated levels of sulfides, which react with chlorine used for disinfection, causing objectionable taste and odor that can be characterized as a burnt match taste and/or sulfurous odor. Some individuals may be more sensitive to this taste and odor.

Well 9 is used throughout the year, but can be more prevalent in certain areas of the water system depending on current demands. This water meets all water quality requirements set by the Department of Health.

The District has conducted a pilot study to determine viable treatment options to reduce the taste and odor, as well as chlorine demand, and is currently in the process of implementation.

A granular activated carbon (GAC) filter can be effective at reducing the taste and odor of water used for drinking.