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  • Wastewater improvements permit return of endangered fish to Lower Santa Cruz River

    Dec 14, 2017 | Read More News
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    File: Gila topminnow Improved water quality in the Lower Santa Cruz River resulting from upgrades to Pima County’s wastewater treatment facilities have allowed the return of a native species of fish to the Tucson area for the first time in more than 70 years. read more