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...

Celebrating Independence: A Safe and Fun 4th of July

Celebrating Independence: A Safe and Fun 4th of July

July 01, 2025

The 4th of July is a time to come together with family and friends, celebrate our nation's independence, and enjoy the warmth of summer with BBQs, fireworks, and poolside fun. While it’s an exciting and festive time of year, it’s also important to remember that safety should always come first.

 

Read the full article »