Water service & leaks
Concealed pipe leaks, supply-pipe replacement, mixer and tap works, WC and basin repairs. Pressure test when a leak is suspected.
PUB · Licence WS16882018
PUB Licensed Plumber Singapore
AOT Trinity is a PUB licensed plumbing contractor for HDB, condo and landed homes across Singapore. Licensed plumber Lam Kien Choon (WS16882018) signs water service works that a handyman cannot — leaks, sanitary, tanks, meters and PUB submissions.
Who / what / where
Licensed water service works, not DIY plumbing
ALPHA & OMEGA TRINITY PTE. LTD. (UEN 201215586K) is a Singapore M&E contractor with a PUB licensed plumber on the team. If your job needs a PUB submission, a water-service drawing, or work on concealed pipes, sanitary lines, storage tanks or meters, you need WS16882018 — not a general fixer.
We work from 32 Old Toh Tuck Road, I. Biz Centre #03-11, Singapore 597658 and serve the whole island. Office hours Monday to Saturday 08:00–17:00. After-hours WhatsApp is subject to dispatch.
- • PUB licensed plumber: Lam Kien Choon · WS16882018
- • BCA CRS Grade L1 — ME12 Plumbing, Gas Piping & Sanitary Works (to 1 Sep 2028)
- • Plumbing labour from S$50 (parts and GST extra; confirm on site)
- • Related: emergency plumber, water tank cleaning, licences
What a PUB licensed plumber can sign
PUB requires a licensed plumber for water service installation and alteration. AOT handles the site work and the paperwork so MCST, HDB and landlords get a clean submission trail.
PUB submissions
New water points, sanitary connections, sub-meters and works that must be lodged with PUB. Schematic and licensed-plumber sign-off.
Tanks, pumps & sanitary
Roof and basement tank works, float valves, booster pumps, ejector pits. See also booster pump Singapore.
How we work
1
WhatsApp photos
Send address, photos or a short video. We tell you if a licensed plumber is required.
2
Site survey
Survey during office hours. Pressure test quoted when needed to find a hidden leak.
3
Written quote
Labour from S$50; pipe replacement and PUB submissions priced after survey.
4
Works + submission
Licensed plumber completes the works and lodges PUB papers where the job requires it.
Licence on the page, not buried
Do not use the old number WS1648201S. The current PUB plumber licence is WS16882018 (Lam Kien Choon). Full BCA workheads and bizSAFE 3 are listed on our licences page.
ACRA registered office: 607 Choa Chu Kang Street 62 #09-111, Singapore 680607. Operations: 32 Old Toh Tuck Road #03-11, Singapore 597658.
- PUB Licensed Plumber WS16882018
- BCA ME12 (L1) Plumbing, Gas Piping & Sanitary Works
- BCA ME01 (L1) Air-Conditioning, Refrigeration & Ventilation
- BCA ME06 (L1) Fire Prevention & Protection Systems
- WSHC bizSAFE Level 3 (valid until 7 September 2026)
Areas we serve
Islandwide Singapore — HDB, condo, landed and commercial. Typical call-outs include Jurong, Choa Chu Kang, Bukit Batok, Queenstown, Tampines, Punggol, Yishun, Woodlands, Bedok, Geylang, Orchard and the CBD.
See industries we serve for residential, commercial, industrial and healthcare.
PUB licensed plumber FAQs
Who is AOT’s PUB licensed plumber?
Lam Kien Choon, licence number WS16882018, under ALPHA & OMEGA TRINITY PTE. LTD. (UEN 201215586K).
When do I need a PUB licensed plumber in Singapore?
When the works are water service works that PUB requires a licensed plumber to carry out or submit — new points, concealed pipes, sanitary, tanks, certain meters and pumps. Cosmetic tap swaps may not need a submission; we will say so after seeing photos.
Do you do emergency leaks?
Yes — WhatsApp +65 8151 8857. Same-day response depends on crew availability. Details on our emergency plumber Singapore page.
How do I book?
WhatsApp the address and photos. Monday to Saturday 08:00–17:00 for scheduled surveys. Written quote before we start.
Need a PUB licensed plumber today?
Send the address and photos. We confirm whether WS16882018 must sign the job.
WhatsApp AOT