Mercedes, Texas, USA

Water and Wastewater Systems Improvements City of Mercedes, Texas

Status: Completed


The city of Mercedes provides water, wastewater and solid waste services for its residents. Water is supplied through the Rio Grande and treated in a 3 million gallon per day (mgd) water treatment facility. Residents of the outlying colonias currently do not have access to a
public water supply system, relying on water wells, bottled water, water hauling services, drainage and irrigation ditches, as well as their neighbors for potable water.

The wastewater facilities consist of a 2.3 mgd oxidation ditch wastewater treatment plant and a centralized collection system. Many colonia residents currently use septic tanks for disposal of their wastewater.


Promotion of economic development in the area, better water and wastewater treatment capabilities, and expansion of the City's tax base are all effects of construction of the proposed facilities that will benefit low-income residents. Economic expansion will increase the availability of jobs in the area and an increased tax base will allow the City to expand it's services to all residents. An improved quality of life, both environmentally and economically, will be experienced by low-income residents.

As was mentioned earlier, construction of the project to connect the 3,885 colonia residents to municipal water and wastewater treatment facilities is planned. The combined effect of this project with the proposed project will be to allow the City to supply potable water to and collect and treat all wastewater from all residents in the surrounding colonias. Construction of these projects improves the area's public health by providing a permanent and safe drinking water source to residents and reduces the volume of pollutants that reach area water resources by eliminating ineffective and outdated wastewater collection and treatment methods.

Project Financing

Total Project Cost US 11.16M
NADBank Funding US 1.88M - Loan
US 0.9M - NADBank Grant: BEIF
Other Funding Partners Border Environment Infrastructure Fund (BEIF)
Loan & Guaranty Program
Institutional Development Cooperation Program (IDP)
U.S Economic Development Administration
Rio Grande Empowerment Zone
Texas Department of Commerce
Texas Water Development Board (TWDB)