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Elias defends Clean Water Act in U.S. Senate hearing

Pima County Supervisor Richard Elias told federal lawmakers that a plan to limit the so-called Waters of the United States rule would end up eliminating clean-water protections for “rivers like the Santa Cruz, the Salt, the Gila.”... Read more»

Waste flowing into Nogales Wash raises concerns about water supply for both Mexico and U.S.

Failing wastewater pumps in Nogales, Son., have caused raw sewage to back up and empty into the Santa Cruz River watershed on the U.S. side of the border.... Read more»

What the Devil won't tell you

Grijalva keeps resisting in Southwestern Arizona

The unabashedly liberal Democrat’s roots have gone through the caliche and into the bedrock of Southern Arizona politics but every two years the right thinks Raul Grijalva's about to go down. Wednesday's debate didn't bolster their hopes.... Read more»

Cochise County vaccinating Naco residents after sewage spill reaches residential areas

Leaking transborder pipelines have been a problem in this small border town for more than 30 years, but this is the first time the toxic sewage has reached residential areas. ... Read more»

Cross-border Nogales sewer needs $25 million in repairs

A transborder pipeline that brings millions of gallons of raw sewage from Mexico to the U.S. faces challenges on two fronts: The pipe is nearly 70 years old and increasingly prone to leaks; and heavy metals in the wastewater are causing problems at the Arizona plant where it’s treated.... Read more»

Gov. Ducey declares emergency over sewer line break in Nogales

Arizona Gov. Ducey declared a state of emergency, calling for the U.S. Army Corps of Engineers to provide assistance to staunch a breach in a pipeline that carries sewage from Sonora, Mexico, to a wastewater treatment plant north of Nogales, Arizona.... Read more»

Water cooperation across U.S.-Mexico border essential, complex

Nogales, Arizona, and Nogales, Sonora, share something more meaningful than their city name. They also share a source of water that is vital to their region of the border.... Read more»

Enviros, tribal activists hail EPA’s Superfund designation for Gold King Mine

Environmental and tribal activists welcomed the government’s announcement Wednesday that it had designated the Gold King Mine a Superfund site, advancing the cleanup of an area contaminated by a multimillion-gallon toxic spill last year. ... Read more»

McCain, Kirkpatrick blast EPA over Gold King spill

U.S. Sen. John McCain and U.S. Rep. Ann Kirkpatrick are accusing the EPA of neglect for the agency’s response to Navajo communities after a Colorado mine spill polluted the San Juan River last August.... Read more»

Groups to feds: Tighten mining rules in light of Colorado spill

Citing the release of millions of gallons of toxic wastewater into a southwestern Colorado river earlier this month, a coalition of conservation groups, two Native American tribes and two county governments in Arizona petitioned federal agencies Tuesday to tighten mining regulation on public lands.... Read more»

Az officials hopeful, watchful as toxic release moves toward Colorado River

Arizona officials said Tuesday they continue to monitor a massive spill of toxic mining sludge that is heading downstream toward the Colorado River, but are hopeful that it will have little impact by time it reaches the state. ... Read more»

Guest opinion

Beryllium plant: Public needs to speak out about their environment

The Materion plant, the nation's largest manufacturer of beryllium oxide products in on South Tucson Boulevard in a residential neighborhood with numerous nearby schools. Materion, formerly known as Brush Ceramics and Brush Wellman, opened its ceramics manufacturing plant in 1980. Since then, at least 35 employees have developed chronic beryllium disease, and at least 5 have died. People had fears and concerns that the risk posed by the Brush Wellman plant isn't limited to its employees.... Read more»

John C. Scott

J.C. Scott: Tobin urges benefits for Hotshot families

Rosemont Copper's Cathy Arnold, Tucsoncitizen.com's Mark B. Evans, financial advisor Shelly Fishman, TucsonSentinel.com's Dylan Smith, Arizona House Speaker Andy Tobin... Read more»

Message from Mexico: U.S. polluting water it may someday need to drink

U.S. environmental regulators have long assumed that reservoirs located thousands of feet underground will be too expensive to tap. As a result, American scientists and policy-makers often exempt these deep aquifers from clean water protections and allow energy and mining companies to inject pollutants directly into them. ... Read more»

Polluting the well: Feds let industry poison water supply

Federal officials have given energy and mining companies permission to pollute aquifers in more than 1,500 places across the country, releasing toxic material into underground reservoirs that help supply more than half of the nation's drinking water.... Read more»