Residents queue up for water supplied by the local government in a community in Lanzhou, Gansu province, April 12, 2014. Crude oil leak from a petrochemical pipeline poisoned the water source for a local water plant and brought hazardous levels of benzene into the city's tap water on Friday morning, affecting 2.4 million people. The local government has taken emergency measures to ensure the safe water supply in affected areas. [Photo/Xinhua]