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Environmental Engineering

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New willow groves, wetland plants grace Santa Cruz River stretch in Tucson
Environment

New willow groves, wetland plants grace Santa Cruz River stretch in Tucson

  • Tony Davis
  • Updated Apr 12, 2026

Everywhere you look for almost a mile along the Santa Cruz River on Tucson's south side, you see Gooding's willows. Short ones, tall ones, fat…

Tucson Water violates state rules for keeping track of its drinking supply
Subscriber

Tucson Water violates state rules for keeping track of its drinking supply

  • Tony Davis
  • Updated Apr 18, 2026

Tucson Water violated state requirements for two straight years, limiting how much of its drinking water is lost or not properly accounted for…

Letter: Arizona water situation
Local-issues

Letter: Arizona water situation

  • Stephen Fleming, Midtown
  • Apr 3, 2026

Excellent reporting by Tony Davis in Sunday’s cover story regarding Arizona’s water woes.

Arizona's future with massive cuts in CAP water: What to know
Environment

Arizona's future with massive cuts in CAP water: What to know

  • Tony Davis
  • Updated Apr 17, 2026

Will Arizona get more serious about water conservation, or return to depending on groundwater pumping? Experts weigh in.  

As water lifeline evaporates, Arizona faces a cultural change over water use
Subscriber

As water lifeline evaporates, Arizona faces a cultural change over water use

  • Tony Davis
  • Updated Apr 15, 2026

Out in the Avra Valley, about 30 miles northwest of Tucson, a wide swath of water pours down a fenced-off canal about 80 feet wide.

Pima County seeks to catch Santa Cruz River's flow, money
Environment

Pima County seeks to catch Santa Cruz River's flow, money

  • Tony Davis
  • Updated Apr 10, 2026

A food control project in the Santa Cruz River to keep the flow of treated wastewater from crossing into Pinal County will allow it to be used for local needs and raise money.

Patagonia mine faces scrutiny after heavy metal discharge
Environment

Patagonia mine faces scrutiny after heavy metal discharge

  • Henry Brean
  • Updated Feb 6, 2026

A critical minerals mine near Patagonia is upgrading its water treatment plant and answering questions from concerned residents after exceeding its permitted discharge level for a potentially toxic heavy metal.

Deal will reduce groundwater overpumping in southeast Arizona
Subscriber

Deal will reduce groundwater overpumping in southeast Arizona

  • Tony Davis
  • Updated Jan 11, 2026

Attorney General Kris Mayes says her new agreement with a mega-dairy company will cut groundwater pumping in Southeast Arizona's Willcox Basin…

Owner of huge Arizona dairies makes groundwater deal with state
Local news

Owner of huge Arizona dairies makes groundwater deal with state

  • Tony Davis
  • Updated Jan 10, 2026

Arizona Attorney General Kris Mayes says "megadairies" near Willcox will take 2,000 acres of farmland out of production and set up fund to help neighbors dig deeper wells for water.

Local opinion: The mirage of ‘assured’ water in Arizona
Columnists

Local opinion: The mirage of ‘assured’ water in Arizona

  • Rusty Childress Special to the Arizona Daily Star
  • Dec 31, 2025

Seven states. One river. Phoenix did not grow to five million people by accident. It grew because semantics made scarcity sound manageable.

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