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Arizona water treatment plant upgrade hailed a success

An aerial view of the city
An aerial view of the city
The city of Douglas in Arizona celebrated upgrades and increased treatment capacity at its wastewater treatment plant (WWTP).
The expansion of the WWTP is part of a larger project that includes the extension of new wastewater collection infrastructure to provide first-time service to households.
The WWTP upgrades were partially funded with a US$7.6-million (€6.7 million) grant from the Border Environment Infrastructure Fund, which is funded by the US Environmental Protection Agency (EPA) and administered by NADB.
The Bay Acres Wastewater Collection System and Wastewater Treatment Plant Expansion Project will provide first-time access to wastewater services for residents in unserved areas, as well as adequate wastewater treatment capacity, contributing to the reduction of water pollution and the risk of waterborne diseases.
The expansion of the plant has increased treatment capacity to an average annual flow of 2.6 million gallons per day (mgd) to accept and treat flows from the expanded wastewater collection system and modest growth in the City of Douglas.
The upgrades include two new oxidation ditches, a new secondary clarifier, and modifications to the existing surface aeration basins to convert them to aerobic digesters, among other improvements. As a result, the WWTP will also produce a better-quality effluent.
“Improving our nation’s water infrastructure in communities across the country is a top priority for the Trump Administration,” said EPA administrator Andrew Wheeler.
An aerial view of the city