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Posted on: May 29, 2020

City Updates Wellhead Protection Plan in Accordance with State Requirements

Washington State requires public water systems, such as the City of North Bend’s, to develop a site-specific Wellhead Protection Plan (WHPP). The Wellhead Protection Program in Washington State is designed to prevent contamination of drinking water. To achieve this objective, The Department of Health (DOH) has published guidelines for completing a Wellhead Protection Plan (DOH 2010). The WHPP is an update to the City of North Bend’s current plan (Gray & Osborne 2010).

Wellhead Protection Areas (WHPAs) were delineated for each of the City’s two current water sources (Centennial Well and Mount Si Springs), and two potential future water sources. The WHPAs were delineated using a combined approach that included groundwater flow model results to simulate capture zones and analytical methods recommended by the Environmental Protection Agency (EPA).

Read the full WHPP here.

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