As  per  the Kerala Water Supply and Sewerage Act-1986, the functions of the Authority are

(i) Preparation, execution, promotion, operation, maintenance and financing of the schemes for the supply of water and for the disposal of waste water;

(ii) Rendering all necessary services in regard to water supply and collection and disposal of wastewater to the Government and on request to private institutions or individuals:

(iii) Preparation of State plans for water supply and collection and disposal of waste water on thedirections of the Government;

(iv) Fixation and revision of tariffs, taxes and charges of water supply and maintenance service in theareas covered by the water supply and waste water systems of the Authority;

(v) Establishment of State standards for water supply and waste water services;

(vi) All functions, not stated herein which were being performed by the Public Health Engineering Department of the Government before the commencement of this Act;

(vii) Assessment of the requirements for power and training in relation to water supply and sewerageservices in the State;

(viii) Carrying out applied research for the efficient discharge of the functions of the Authority;

(ix) Making provision for the supply of wholesome water and efficient sewerage services to thepeople in the State;

(x) Taking such other measures as may be entrusted to the Authority by the Government bynotification in the Gazette.

(xi) Such other functions as may be entrusted to the Authority-by the Government by notification inthe Gazette.