Mexicali, Baja California, Mexico

Sanitation Program of the City of Mexicali, Baja California

Status: Completed


Wastewater (WW) discharges from the sewage system of the city of Mexicali had deteriorated the water quality of the New River. Mexican and US Governments coordinated actions within the framework of the International Boundary and Water Commission (IBWC) agreements reached in minutes 264 and 294, to create a Sanitation Program to solve this problem. These minutes included an integral sanitation program for Mexicali, consolidation of planning studies and specified quality conditions for treated municipal water to be discharged to the New River. This Project was referred as Mexicali I Project.


The purpose of the Project was to eliminate exposure to untreated wastewater discharges by expanding the wastewater collection system to unserved areas, reducing groundwater pollution and the risk of waterborne diseases.


The extended scope consisted of 19 projects to improve WWC and WWT to over 46 colonias, including new and rehabilitated collectors; building pumps stations 4 and 8; and rehabilitating and expanding the Zaragoza WWTP to a capacity of 29.7 MGD.

Project Financing

Total Project Cost US 55.02M
NADBank Funding US 20.62M - NADBank Grant: BEIF

Project Photos