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...

Are you Drinking Enough Water This Winter?

Are you Drinking Enough Water This Winter?

February 01, 2021

Chapped lips? Dry skin? Headaches? Nosebleeds? Dry cough? Fatigue?

These are all signs that you might not be getting enough water this winter. In the summer, when you’re hot and sweaty, your body keeps reminding you that you’re thirsty and NEED water. But in the winter, when you’re cold and shivering, it’s all-too-easy to neglect hydration... 

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