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...

Celebrate, Rest, Relax & Repeat!

Celebrate, Rest, Relax & Repeat!

December 01, 2022

Wishing the Happiest of Holidays to Family and Friends This Holiday Season! 

For the most wonderful and spirited time of year, it is easy to forget to take care of yourself while you are making everyone else’s holiday magical. Well, did you realize that, in general, basic hydration tends to dwindle during the winter months? 

Read the full article »