Bryan Cassens, Assistant Senior Director at the Scottsdale Water Campus, walks through the site, Wednesday, Sept. 9, 2026, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

Water flows through part of the standard wastewater treatment A+ effluent tertiary filter system at the Scottsdale Water Campus on Wednesday, Sept. 9, 2026, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

The 18th green at the TPC Scottsdale, a golf course that gets their water from the Scottsdale Water Campus, is seen Wednesday, Sept. 9, 2026, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

Campaign signs for Scottsdale City Council candidates are posted Wednesday, Sept. 9, 2026 in Scottsdale, Ariz. (AP Photo/Wufei Yu)

Michael Serpa, senior scientist at the Scottsdale Water Campus, works on water testing, Wednesday, Sept. 9, 2026, in Scottsdale, Ariz. (AP Photo/Ross D. Franklin)

The entrance to an exhibit on Emmett Till is seen at the Smithsonian's National Museum of African American History and Culture, Wednesday, Sept. 23, 2026, in Washington. (AP Photo/Julia Demaree Nikhinson)

Shanita Brackett, acting director of the Smithsonian's National Museum of African American History and Culture, speaks during an interview with The Associated Press, Wednesday, Sept. 23, 2026, in Washington. (AP Photo/Julia Demaree Nikhinson)

Cars drive past Smithsonian's National Museum of African American History and Culture, Wednesday, Sept. 23, 2026, in Washington. (AP Photo/Julia Demaree Nikhinson)