Reviewed · 30 Oct 2026 Report an error
A National Water Supply and Drainage Board scheme drawing on the Nilwala river to serve 12 divisional secretariat areas in Matara and part of Hambantota. Its design-and-build contract was ended by mutual agreement in January 2023 at 93.4% progress, so the remaining works are still to be completed.
Key facts from the documents
- Intake 66,000 m³/day; treatment plant 33,000 m³/day in this stage; about 78 km of transmission and 200 km of distribution mains.
- Planned to reach a further 285,000 people by 2046 on top of the 284,808 served by the Matara–Mirissa scheme.
- Contract with Kolon–Samsung C&T JV started on 11 October 2017; funded by a Rs. 35 bn NDB loan and Rs. 4 bn from the government.
- The NWSDB project page records the mutual termination on 31 January 2023 after budget shortfalls.
How to take it further
Watch NWSDB tender notices for a contract to finish the remaining works.
Assessment
Evidence for
- Scope, capacities, coverage, contractor, funding, start date and the 2023 termination at 93.4%. Document 1
Evidence against
- Announced only: no call for bids or proposals has been seen yet. Document 1
Risks
Not yet assessed
Unknowns
- No closing date is given in the sources. Document 1
How the score and confidence were set
- Status: 20 of 40
- Way to take part stated: 15 of 15
- Dates in the sources: 15 of 15
- Division named: 10 of 10
- Confidence: 20 of 20
- Yes: Main document from an official publisher
- Yes: Main document under 180 days older than our check
- No: More than one document
- Yes: Checksum kept for the main document
- Yes: Checked in the last 30 days
Evidence
The document this record rests on. Facts are restated in our words; the documents are linked, not copied.
- Primary source Statutory body or authority
Our projects: Matara Stage IV Water Supply Project
National Water Supply and Drainage Board
Open document on waterboard.lk
