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This project was Certified on June 22, 2000


Water / Wastewater


Nogales, Arizona, USA

Benefited Population

220,974 people

Projected Cost

$74,100,000.00 USD

Technical Assistance

$596,740.00USD from PDAP


City of Nogales



The project consists of upgrading and expanding the Nogales International Wastewater Treatment Plant (NIWTP), and replacing the International Outfall Interceptor (IOI), as well as portions of the Nogales, Arizona wastewater collection system. The upgrade of the NIWTP includes modifications to provide nitrogen removal in order to meet the required concentrations for protection of aquatic life and water supply sources.

    Certification Document