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Tempe water facility upgrades could disturb ancient tribal site

Red and and silver water pipes
Tim Agne
/
KJZZ
The Kyrene Water Reclamation Facility in Tempe on June 15, 2026.

Tempe is upgrading a water treatment facility, which could have negative impacts on a nearby archeological site once occupied by a tribal group.

Tempe officials say the upgrades to the Kyrene Water Reclamation Facility will help support long-term water sustainability. But it also sits near a site known as Los Guanacos, which was once a village occupied by the Hohokam, or Ancestral O’odham, people.

Light pink building framed by bushes has sign with T and reads Kyrene Water Reclamation Facility
Tim Agne
/
KJZZ
The Kyrene Water Reclamation Facility in Tempe on June 15, 2026.

“It's considered historically significant. It's also been determined eligible for the National Register of Historic Places," said Zachary Lechner, Tempe’s historic preservation officer.

"It was estimated they lived there between about 1150 and 1400 A.D.," he said.

The U.S. Army Corps of Engineers has determined that disturbing the ground near the archeological site could harm artifacts or other deposits. The agency has consulted with Arizona tribes and will monitor the city’s construction with the goal of protecting cultural resources.

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Ignacio Ventura is a reporter for KJZZ. He graduated from the University of Southern California with a bachelor’s degree in creative writing and a minor in news media and society.