Municipal Water and Wastewater Projects Below is a table listing of past projects. Some of the project names have links associated with them that will take you to a more detailed page describing that project. Client City State Country Project Columbus,OH, City of Columbus OH USA Wastewater Treatment Plant Decatur, IL, City of Decatur IL USA Wastewater Treatment Plant Phase I and II Houston, TX, City of Houston TX USA Wastewater Treatment Plant Houston, TX, City of Houston TX USA Wastewater Treatment Plant Expansion Houston, TX, City of Houston TX USA Water Treatment Plant Houston, TX, City of Houston TX USA Water Treatment Plant Expansion Jefferson Parish Harahan LA USA Wastewater Treatment Plant