Transitionng from Surface Water to Groundwater: The District of 100 Mile House Water Supply Strategy

Description:The District of 100 Mile House presently obtains the majority of its water supply needs from Bridge Creek, augmented by groundwater from a single 175 metre deep well. In 2013, grant funding was awarded to complete comprehensive studies to guide long term water system planning. In light of evolving water treatment requirements and concerns over the security of the Bridge Creek source driven by land use and climate changes, increasing reliance on groundwater resources was identified as the preferred long-term water supply option. Detailed hydrogeological investigations were carried out, including confirmation of aquifer and well capacity, groundwater quality and assessing the feasibility of Aquifer Storage and Recovery. The aquifer sourced by the District of 100 Mile House is somewhat unique in B.C.. Analogous to the prolific Columbia River Basalts in the Northwestern United States, the aquifer forms in layered lava flows and is highly productive and characterized by good water quality. The aquifer is also secure: deep and isolated from the effects of land use at the surface, the source is not at risk of containing pathogens. This presentation outlines District’s plan for transition to increased reliance on groundwater, including the implementation of microbiological manganese removal, additional source development, and water treatment requirements in the context of the recently released Drinking Water Treatment Objectives for Groundwater Supplies in B.C. The hydrogeology of the deep basalt aquifer will also be discussed, as little is known about this regionally extensive aquifer, yet to be heavily developed in Interior of B.C.

Authors: Rhodes, Ryan

Subjects:

Tags:2015 BCWWA Annual Conference & Trade Show,AC15,AC15 presentations

Citation:Stream 2: Ensuring Water Quality & Supply

Publication Date:May 29th, 2015 Upload Date:Jun 29th, 2015

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