In 2009, the American Water Works Association (AWWA) worked with its membership to identify the specific competencies required for workers in the water and wastewater industry. In collaboration with the Environmental Protection Agency, Office of Water and the Water Environment Federation (WEF), the results of those efforts were translated into the competency model framework provided by the Employment and Training Administration (ETA) to create the first version of the model. In 2015, these organizations reconvened to begin the process of updating the model. Developed as a collaborative effort with subject matter experts from partnering organizations, the updated model was finalized in March 2016. Information about the specific content updates can be found in the Summary of Changes.