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 National Garden Month this April

Celebrate National Garden Month this April

April 01, 2025

As April blossoms into National Garden Month, it's the perfect time to revel in the beauty and serenity of your own backyard. Whether you're a seasoned gardener or just beginning to cultivate your green thumb, there's something truly magical about connecting with nature and watching your outdoor oasis come to life.

Read the full article »