She holds a degree in Environmental Engineering, (1980), a Masters degree (1982) in Environmental Engineering and a PhD (1985) in Water and Wastewater Treatment. With 31 years of professional experience, some of the positions she has occupied include engineer at Lyonnaise des Eaux, Paris (1985); deputy coordinator of the Water Quality Department (1991-1992) and coordinator of the Human Resources Development Department of the Water Sector at the Mexican Institute of Water Technology (IMTA); coordinator of the Environmental Engineering Department at UNAM (1988-1989); Deputy Director of the Hydraulics and Environmental Department at UNAM (1991-2001), leader of project at the University of Pretoria in South Africa (2005). From 2009 to September 2012, she was a Professor and Head of the Treatment and Reuse Group at UNAM.
She is currently the Director of the Division of Water Sciences at UNESCO and Secretary of the International Hydrological Programme. She was the co-coordinator of leading authors for the freshwater resources chapter under the adaptation group of the Intergovernmental Panel on Climate Change (IPCC) for AR5. Dr Jiménez has authored more than 460 publications (books and book chapters, papers in journals, norms, standards and patents). Her fields of expertise include: water and wastewater treatment and reuse technologies and urban water, Dr Jiménez is the recipient of several prestigious honours and awards.