A critical appraisal of the water supply and sewage disposal arrangements in the univesity of Moratuwa

Abstract

A convenient supply of safe water and the sanitary disposal of human wastes are essential ingredients of a healthy, productive life* With this in view a critical appraisal of the water supply and sewage disposal arrangements in the University of Moratuwa was undertaken to explore suitable means of improving the system- Thereby a more satisfactozy and efficient service for the present and the future will be ensured* In this study consideration has been given to the suitability of the present sources in terns of location, quality, adequacy, storage facilities, etc* with regard to existing water supply system* In assessing the sewage disposal arrangements presently prevailing attention has beoi focused on such aspects as location of 3ewers, manholes and treatment units, etc* Further a detailed investigation into the working of the existing treatment units was also undertaken in order to assess the performance of these units in terms of 20 and SS. removal of BOD5 Investigations revealed the inadequacy and inefficiency of the present water supply system* There is evidence of faecal contamination of groundwater* Improper operation and maintenance of the sewage disposal system have resulted in its overall inefficiency* Provision of a central water tower of capacity of 120,000 gallons and centralised pump house is recommended* Further, provision of a simple water treatment unit is suggested* The need for immediate repairs to unit No: 2 and the disinfection of all sewage effluent are highly favoured* 3 The introduction of a new central sewage treatment unit incorporating as far as possible the present sewers and manholes is recommended. To obtain a satisfactory and efficient service a proper management of the water supply and sewage disposal arrangements is essential.