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National Water Supply and Drainage Board Laboratories services are structured as given bellow,

  • Central Laboratory Services
  • Regional Laboratories
  • Plant Laboratories

Each laboratory is under the direction of a Chemist with technical coordination and consultation being provided by an Assistant General Manager (Laboratory Services).

Central Laboratory

Central Laboratory functions as the Center for Water Quality Control. It serves as monitor for the activities of all levels of laboratories.

The Central Laboratory Services implements its sampling and analytical schedule as initiated by the AGM (Laboratory Services). It engages mainly operational monitoring and verification monitoring of water quality, research programs and promotes training. It functions as an active laboratory in water (microbiological, chemical, physical and toxic) wastewater, water treatment chemicals (alum, hydrated lime, bleaching powder, polyaluminium chloride, powder activated carbon & polyacrylamide compounds) heavy metals, volatile organic compounds including pesticides and filter media disciplines. Central laboratory acts in an advisory capacity to process control and serve as the processing center for Analytical data to provide higher management levels in the organization.

Sri Lanka Accreditation Board for Conformity Assessment declares that Central laboratory of National Water Supply & Drainage Board having been found to comply with the accreditation criteria for testing laboratories as described in ISO / IEC 17025 : 2005, has been accredited as a testing laboratory under the field of chemical testing for water treatment chemicals; alum and hydrated lime.

Contact Details

National Water Supply & Drainage Board
Thelawala Road, Ratmalana
Tel: 011-2625196
Email: chiefoflabs@gmail.com
Assistant General Manager
Mr. L.P.R.J. Wijesinghe
Tel: 011-2611133, 011-2625196
Email: chiefoflabs@gmail.com