The internal seal may be worn
Washers, cartridges and seals wear over time. When they stop sealing properly, the tap may continue dripping even when the handle feels tight.
The leak location matters
A drip from the spout, handle or base can point to different issues. A short video and close-up photo can help show where water appears.
Repair or replacement depends on the tap
Older taps, damaged mixers or fittings with unavailable parts may be better discussed as replacement enquiries. Do not assume a fixed price before the actual fitting is checked.
Official references
Use these sources for current Singapore licensing or renovation guidance before treating a repair article as final advice.