Chinese Vice Premier Zhang Gaoli has called for better management of the south-north water diversion project.

The project is a glorious mission that must be accomplished, Zhang said during a two-day visit to Nanyang City of central China's Henan province.

Local governments should attach great importance to water pollution control and environmental protection so that water stays clean, he said.

There should be balanced use of different kinds of water and a habit of water conservation, he added.

Zhang also emphasized relief for families that have to be relocated due to the project, noting the need to ensure their employment and welfare.