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Environmental Engineering

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State pushes 10% water use cut for farmers in Willcox Basin
Subscriber

State pushes 10% water use cut for farmers in Willcox Basin

  • Tony Davis
  • Updated 20 mins ago

The Arizona Department of Water Resources is pushing to slash the Willcox basin's chronic overuse of ancient groundwater by half between now and 2075.

Local opinion: We need stronger conservation in water planning
Columnists

Local opinion: We need stronger conservation in water planning

  • Margaret Wilder and Helen Ingram Special to the Arizona Daily Star
  • Jul 26, 2026

The following is the opinion and analysis of the writer:

Is Tucson's 47 years' worth of groundwater enough if CAP is slashed?
Subscriber

Is Tucson's 47 years' worth of groundwater enough if CAP is slashed?

  • Tony Davis
  • Updated Aug 7, 2026

Tucson Water could lose as little as 6% to as much as nearly 85% of its total Colorado River-based drinking water supplies, depending on how big a cut the entire Central Arizona Project takes from the depleted river, Arizona State University researchers have found.

Tucson has 100-year water supply, state finds
Environment

Tucson has 100-year water supply, state finds

  • Tony Davis
  • Updated Jul 31, 2026

In a decision handed down this week, the Arizona Department of Water Resources determined that Tucson can keep its 100-year assured water supply designation. 

Judge halts new Arizona groundwater-saving program
Government-politics

Judge halts new Arizona groundwater-saving program

  • Tony Davis
  • Updated Jul 6, 2026

Judge Scott Blaney's ruling Tuesday marked the second time in t wo months he has overturned efforts by the Arizona Department of Water Resources to 

Tucson, Phoenix create water-sharing plan as Colorado River shrinks
Subscriber

Tucson, Phoenix create water-sharing plan as Colorado River shrinks

  • Tony Davis
  • Updated Jun 17, 2026

For Star subscribers: Tucson and Phoenix have a plan in which city with more water than it needs at the moment can share it.

Groups seek $2 billion for Colorado River water conservation
Environment

Groups seek $2 billion for Colorado River water conservation

  • Tony Davis
  • Updated Jun 17, 2026

Nearly 75 groups and other entities representing a wide range of interests want Congress to pony up at least $2 billion to invest in water con…

Feds will front big bucks to conserve Colorado River water, says Arizona water chief
Government-politics

Feds will front big bucks to conserve Colorado River water, says Arizona water chief

  • Tony Davis
  • Updated May 20, 2026

The federal government has agreed to pump more than $450 million into programs to carry out additional Colorado River water conservation, Ariz…

Letter: Reusing water
Local-issues

Letter: Reusing water

  • Jan Foiles, West side
  • May 3, 2026

I never would have believed I would be on the same page with Loren Hancock but here I am. He is absolutely correct in suggesting we should pur…

Small Arizona town saves water to prevent summer shortages
State

Small Arizona town saves water to prevent summer shortages

  • Clara Migoya Arizona Republic
  • Updated Jun 26, 2026

Kearny faces its biggest water crisis since it was founded in 1958 about 75 miles north of Tucson. 

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