Tucson Water mistakenly sent contaminated water to thousands of residents

Well water injected with hydrogen peroxide passes through UV/AOP Reactors at Tucson Water’s Advanced Oxidation Process Water Treatment facility near Irvington and I-19 on Sept. 26, 2018. Ultraviolet light, used in concert with hydrogen peroxide, creates a photochemical process that breaks down 1,4-dioxane molecules into harmless components. Water treated at AOP is passed to the older TARP facility to remove TCE. Rick Wiley / Arizona Daily Star

Tucson Water recently shut down a treatment plant after discovering it was sending water contaminated with chemical compounds to thousands of residents of downtown and the city’s west and north sides.

Shortly after making that discovery, utility officials also learned that they had mistakenly thought for some time that uncontaminated water was coming out of the plant, which has long treated south-side water pollution.

The utility had been sampling the water at a point its officials thought was connected to the south-side treatment plant, but which actually was getting water from other sources, administrators said last week.

It turned out that water coming out of the treatment plant was now tainted with what’s known as perfluorinated chemicals, also known as PFAS compounds. The treatment plant had been built and later upgraded to […]

More about perfluorinated chemicals, PFAS, in public drinking water supplies:

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What we know about PFAS contamination in Parchment drinking water

Report finds toxins in dozens of public water systems across the USA

DoD admits water at U.S. military bases contains cancer-causing chemicals

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Tucson Water mistakenly sent contaminated water to thousands of residents
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Tucson Water mistakenly sent contaminated water to thousands of residents
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Tucson Water recently shut down a treatment plant sending water contaminated with chemical compounds to 1000s of residents downtown, west, and north sides.
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Arizona Daily Star | Tucson.com
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