Kerala Water Authority was established on 1st April 1984 as an autonomous body of Govt. of Kerala by converting the erstwhile Public Health Engineering Department for the development and regulation of water supply and waste water collection and disposal in the state of Kerala.

Responsibilities
Design, construction, execution, promotion, operation, maintenance and financing of schemes for the supply of water and for the collection and disposal of the waste water.
Rendering all necessary services to the Government in relating to water supply and collection & disposal of the waste water in the State of Kerala.
Establishment of standards for water supply and waste water services.
Fixation and revision of rates for water supply and sewerage maintenance with the approval of Government.
Taking other measures necessary to ensure water supply in time of emergency.

Organisation set up
The Board of the Authority consists of Chairman, Managing Director, Secretary to Government (Water Supply), Secretary to Government (Finance), Secretary to Government (Local Administration), Secretary to Government (Rural Development), two members representing local bodies, two members appointed by the Government , Technical Member and Accounts Member. The Managing Director is the Chief Executive of Kerala Water Authority.
Kerala Water Authority is divided into three regions, viz, South, Central and North with headquarters at Thiruvananthapuram, Kochi and Kozhikode respectively headed by a Chief Engineer at each regional office.
Apart from the Regional Chief Engineers, there are Chief Engineers for (i) Human Resources Developmen (Personal, Services and General matters) and (ii) JBIC projects. There is also a Finance Manager & Chief Accounts Officer to look after the financial management of the Authority.

The Head Office is at Thiruvananthapuram. Places of other offices up to Division level are given in the organisation chart.