Licensed plumbers in Singapore are certified by the Public Utilities Board (PUB) and must hold a valid Water Service Worker (WSW) licence to legally carry out any water supply installation, repair, or maintenance work in the country. Without this licence, a plumber cannot connect pipes to the public water supply system, and any work done may be void of warranty or insurance coverage. You can verify a plumber’s licence status directly through the PUB’s online directory at pub.gov.sg.
How PUB Licensing Works
The PUB issues WSW licences in two tiers. A Licensed Water Service Worker (LWSW) handles general plumbing tasks such as pipe laying, fixture installation, and leak repairs. A Licensed Water Service Plumber (LWSP) holds a higher qualification and can supervise larger installations and more complex water service works. Both must renew their licences periodically and adhere to the Singapore Plumbing Code. Hiring an unlicensed worker for water supply work is an offence under the Public Utilities Act and can result in fines for the contractor and, in some cases, the property owner.
What Licensed Plumbers Can Do
A PUB-licensed plumber is authorised to install, repair, or modify internal water supply pipes, water meters, toilet cisterns, taps, water heaters, and storage tanks connected to the mains. They can also carry out alteration works when you renovate a bathroom or kitchen. Drainage and sewerage work falls under a separate scope covered by the Singapore Civil Defence Force (SCDF) and Building and Construction Authority (BCA) frameworks, so confirm with your plumber whether a specific job requires additional certification before work begins.
Finding a Licensed Plumber in Singapore
The PUB maintains a searchable register of licensed water service workers at its website. The Singapore Plumbing Society (SPS) also maintains a directory of member companies and can help you identify firms with trained, licensed staff. When requesting a quote, ask the plumber for their WSW licence number, check it against the PUB register, and confirm whether their licence tier matches the scope of work you need. Standard call-out rates for licensed plumbers in Singapore typically range from S$50 to S$150 for minor repairs, with after-hours or emergency jobs attracting a surcharge of 30 to 50 per cent above standard rates. Major installation or renovation work is usually quoted separately on a project basis.
Frequently Asked Questions
Can I do my own plumbing repairs at home in Singapore?
Minor maintenance such as changing a tap washer or unblocking a drain trap is generally permitted. Any work that involves connecting to or modifying the building’s water supply pipes must be carried out by a PUB-licensed plumber. Doing such work yourself or hiring an unlicensed person risks fines and can void your home insurance policy.
How do I check if a plumber is licensed in Singapore?
Visit the PUB website and use the Water Service Worker licence lookup tool. You will need the plumber’s name or licence number to run a check. This takes less than a minute and confirms whether the licence is current and valid.
What should I do if a plumber does poor work?
Report the issue to PUB if the plumber is licensed, as the board can investigate complaints and take disciplinary action. If the work was done by an unlicensed worker, you may need to pursue the matter through the Small Claims Tribunal or seek legal advice, as regulatory channels will not apply.
