Mni Wiconi

Water Treatment Plant / Coreline

Oglala Sioux Rural Water Supply System 

605-223-9292

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    Site Under Construction

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    605-223-9292

    Monday - Friday 
    8AM - 4:30PM CT

    28542 Trails End Rd

    Fort Pierre, SD 57532

    P.O. Box 1209
    Fort Pierre, SD

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