To formulate water resource policies and monitor the implementation of such policies in the state.
To source, analyse, store and disseminate information on the water resource data in the state.

To establish, monitor and oversee water parastatals of the ministry – the Rivers State Water Board and the Rural Water and Sanitation Agency.
To initiate and implement water supply projects in all areas of the state.
To liaise with the federal government and international donor agencies on water supply and development for the benefit of the state.
To set standards, regulate, supervise and control the use of all water resources in the state.
Implementing and provision of water legislation/ by-laws.
Collection and evaluation of hydrological and sociological data.