Welcome to the Official Website of Mni Wašté Water Company

The Mni Wašté Water Company is a tribally chartered entity and serves 14,000 members within the Dewey and Ziebach counties on the Cheyenne River Lakota Reservation in South Dakota.

Bill Payment Options

Looking for the most convenient way to pay your bill? We offer a wide variety of payment options to our customers. Simply choose the option that best suits your needs... Learn more...

Changing of the Seasons-It's Time to Prep

Changing of the Seasons-It's Time to Prep

September 01, 2021

Water Is the Most Powerful Force on Earth! 

As we wrap up the wondrous, sunny, summer weather,  it is time to prepare for the changing of seasons. While every region has its own versions of seasons, it’s important for all of us to be prepared and re-prepared for whatever mother nature plans to throw our way.

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