Estimated cost of proposed eastern South Dakota water pipeline is at least $8.4 billion

By: Joshua Haiar

Outlets: South Dakota Searchlight

Published: July 27, 2026

Words: 441

Last Updated: 6 days, 20 hours ago

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SIOUX FALLS — One of several proposed pipeline systems to deliver Missouri River water in South Dakota could cost $8.4 billion to $10 billion, according to estimates shared Monday.

Dakota Mainstem Regional Water System Executive Director Kurt Pfeifle was on a panel speaking to the Rotary Club of Downtown Sioux Falls.

“That includes about a 30% contingency, but right now, there’s just so many unknowns,” Pfeifle said, referring to a cost estimate buffer. …

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