Ground Water Section in the National Water Suppy and drainage Board has been functioning since late 1978. At present the section is operating with the regional RSC set up with direct technical support from the Assistant General Manager (Groundwater) office which is under super vision of DGM(Development) and Addl. GM (Policy & Planning). There are nine regional Grounwater offices for the nine provinces of the country.

 Main activities and services of the Groundwater section are:

  • Hydrogeological and geophysical investigations for ground water sources, bed rock levels, saline intrusions and various purposes of underground activities.
  • Construction of water wells (deep and shallow) using various methods for ground water extraction, well development and supply and installation of Hand pumps and Iron removal plants.
  • Conducting of pumping tests for recommendation of ground water extraction.
  • studies on ground water problems, hydrogeological mapping, groundwater management and environmental impact assessments.
  • Implementation of the national policy 3Tier maintenance system for Hand pumps Tube Wells.
  • Training of NWSDB staff and outside parties/ personals in connection with various aspects of ground water activities 
 Contact Details and Districts Covered :
Groundwater Office Contact Details
Telephone / Fax 
District Covered 
AGM(Groundwater) Office Colombo 0112636584 /  01122622911 All Districts 
Groundwater Investigation Section Colombo 0112636686  All Districts
Ampara  0632224387 Ampara, Batticaloa & Trincomale
Anuradhapura 0252222060 Aanuradhapura & Polonnaruwa
Colombo 0112624444 Colombo, Gampaha & Kalutara
Embilipitiya 0472230181 Rathnapura & Kegalle
Kandy 0812388086/
Kandy, Matale & N'Eliya
Kurunegala 0372267253 Kurunegala & Puttalam
Matara 0412230457  Galle, Matara & Hambantota
Monaragala 0552276133 Monaragala & Badulla
vauniya 0242228300 Vauniya, Kilinochchi, Mulative, Mannar & Jaffna


Up to now there are about 29000 tube wells already constructed in the island for urban and rural water supply systems including private parties and installation of hands pumps.

Capacities of Groundwater Section Click here......

And Click here.....


Guideline for Management of Groundwater sources for piped water supply schemes >> Click here...


භූගත ජල අංශයේ 40 වන සංවත්සරය අභිමානයෙන් සමරමු.

Hydrogelogical Surveys enhances the investigation processes for exposing of possible water resources inside the cavities of Earth. Depending on the Report submitted by Geologists excavations are being done accordingly at the sites.Click here......


Online Groundwater Level Measurements

Groundwater levels measurement is very important tool for Groundwater Studies and Management. Online Groundwater levels measurement through Data Loggers and GPRS system is latest technique of Groundwater levels measurement.

Groundwater Section of the NWS&DB initiated of measuring Groundwater levels Online through Data Loggers and GPRS system in two numbers deep boreholes in Buttala and Maligawila areas in Monaragala district.

The Photographs show initial fixing of Data Loggers at Buttala and Maligawila areas.

Fixing Data Logger in Maligawila





Fixing Data Logger in Buttala




Ground Water  vedio