Laboratory Services

Centre for Quality

The Center for Quality provides and develops laboratory services, to ascertain and assure water and waste water quality through our network of 36 dedicated and decentralized testing laboratories located across the country.

Our tests include water and wastewater quality testing, water treatment chemicals quality testing and filter media testing. Moreover, we provide recommendations related to water quality, hand-on experience in laboratory testing for trainees. We involve in water and wastewater related research activities and help the researchers by sharing water quality related data.

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The testing services are offered at affordable rates by our laboratories, most of which are ISO 17025: 2017 accredited for physical, organoleptic, chemical and bacteriological

ISO 17025:2017 Accredited Laboratories

  • Central Laboratory – Rathmalana
  • Western Production Regional Laboratory – Ambatale WTP
  • Western South Laboratory
  • Regional Laboratory – Vavuniya
  • Regional Laboratory – Jaffna
  • Western Production Regional Laboratory – Biyagama WTP

Our Laboratory Network Spread Across the Country (Click Here…)


Water quality monitoring laboratories


Wastewater quality monitoring


Central Laboratory


R & D

Mr. Jayalal Wijesinghe HOQ cewas

Head – Centre for Quality

Mr. Jayalal Wijesinghe

+94 11 26 11 133
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The Unique Advantages

  • Technical consultations to improve water quality including direct consultations with qualified Chemists / Bacteriologists.

  • ISO 17025: 2017 accredited facilities which follow testing methods approved by SLSI, APHA.

  • Amongst lowest rates charged. Most testing services can be obtained in any district without requiring travel to Colombo.

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  • Fast dispatch via digital platforms.

  • Are competent and equipped to test for all parameters of SLS standards.

  • The laboratories located in Ratmalana and Ambatale are the only ISO 17025:2017 accredited laboratories in Sri Lanka with capability for testing for Aluminum Sulphate & Hydrated Lime.