Mexicali  II
                          Wastewater Treatment Plant
Problem: The New River has been considered one of the
   most polluted rivers in the United States. The river
   passes directly through two sister cities in Region 9:
   Mexicali (Baja) and Calexico (California) which
   suffered the pervasive stench of raw sewage.

Solution: With the construction of a new wastewater
   treatment plant, collection lines and a force main, 15
   MGD of raw sewage is  now collected, treated,
   disinfected. As the discharge makes its way 28 miles
   south, New River water quality data at the U.S. border
   indicates that concentration of bacteria have dropped
   by 98%. The plant currently serves 235,000 Mexicali
   residents.
       s
     ^  U.S.-Mexico Border Water Infrastructure Program

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