Complex sentence: Estadísticas del Agua en México, Edición 2008 By contrast, the poorer southern regions have abundant water resources; however, surface and groundwater are overexploited and polluted thus leading to an insufficient water availability to support economic development and environmental sustainability.
Split into simpler sentences: Estadísticas del Agua en México, Edición 2008 Poor southern regions have abundant water resources. Surface and groundwater are overexploited and polluted, leading to insufficient water availability to support economic development and environmental sustainability.