Groundwater Management Area


The purpose of the Groundwater Management Area is to reduce the nitrate contamination concentrations in groundwater below state drinking water standards.

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Does your drinking water come from a private well?
Check out these resources:

Private Well Water
Nitrates In Drinking Water
Certified Laboratories List
Yakima Health District

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Haga clic aquí para español

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  1. About

    Learn about nitrates, where the Lower Valley Ground Water Management Area (GWMA) is located and view frequently asked questions.

  2. GWAC

    Learn about the members of the Lower Valley Groundwater Advisory Committee (GWAC) and see general information about the meetings.

  3. Working Groups

    Learn about the various work groups and the work they are doing to address nitrates in the groundwater.

  4. Resources

    Learn about the history of the Lower Valley Groundwater Management Area and view various articles, reports, and research.

  5. Healthy Wells

    May 19, 2016 Inspire Health Fair

  6. Take Our Survey

To have agendas and meeting summaries from either the GWAC or the work groups sent directly to your inbox, click on Notify Me in the left-hand navigation bar to subscribe.