The 4th Industry Revolution was advocated by Klaud Schwab who is founder of World Economic Forum at the Davos
Forum in 2016, and there are big differences on ICT based 4th Industry revolution in the aspects of speed, scope and
impact compared with the 3rd Industry revolution. Creating new industries and values through technology such as internet
of things, cloud, big data, and artificial intelligence are included in the meaning of The 4th industry revolution. In this
article, the direction of change to water technology in response to the 4th Industry revolution is surveyed. 4G Water
Infra should minimize environmental impact under the consideration of sustainable development and advanced technologies.
To solve the existing water infra problems, it is common and fundamental that the intake water from nature can be
regarded as borrowed from nature and it should be returned to natural state with improved water quality. Government,
academic organizations and industries should prepare and collaborate together in order to help our country