Consumers researching water tank cleaning in Singapore are often told to "check the NEA licence details" of a provider. In practice, water tank cleaning is regulated primarily through PUB (Public Utilities Board) plumber licensing, not a distinct NEA company licence. This page explains exactly how the two regulators relate, and provides AOT Trinity's verifiable credentials.
NEA vs PUB: Who Regulates What
NEA (National Environment Agency)
Sets public health, sanitation and environmental standards, including general water quality and hygiene expectations.
PUB (Public Utilities Board)
Licenses individual plumbers authorised to perform work connected to Singapore's water supply network — this is the licence that applies directly to water tank cleaning and repair.
AOT Trinity's Verifiable Credentials
| Credential | Number / Level | Issuing Body | How to Verify |
|---|
| PUB Plumber Licence | WS16882018 | Public Utilities Board | PUB licensed plumber search tool |
| BCA Registration | ME01 (Air-Con/HVAC), ME06 (Fire Prevention), ME12 (Plumbing/Sanitary) | Building and Construction Authority | BCA contractor registry |
| BiZSAFE | Level 3, Certificate E18947 | Workplace Safety and Health Council | BiZSAFE certificate lookup |
| UEN | 201215586K | ACRA | ACRA BizFile+ search |
Step-by-Step: How to Verify AOT Trinity's Credentials
- Go to PUB's official licensed plumber directory and search "WS16882018".
- Confirm the licensee name matches AOT Trinity's registered plumber, Lam Kien Choon.
- Search BCA's contractor registry for "Alpha & Omega Trinity" under ME12.
- Search ACRA BizFile+ for UEN 201215586K to confirm active company registration.
Frequently Asked Questions
Water tank cleaning in Singapore is primarily governed by PUB licensing for work connected to the water supply network, not a separate 'NEA licence'. AOT Trinity holds PUB Plumber Licence WS16882018, and follows sanitation practices consistent with NEA's public health standards.
NEA sets public health, sanitation and environmental standards. PUB licenses individual plumbers authorised to perform work connected to the water supply network, including domestic water tank cleaning and repair. A compliant contractor should hold a PUB licence; there is no separate 'NEA water tank licence' issued to companies.
Search licence number WS16882018 on PUB's official licensed plumber directory to confirm active status and licensee name.
ME12 is a Building and Construction Authority classification for contractors registered to perform Plumbing and Sanitary works, which covers water tank and piping-related work.
BiZSAFE is a national workplace safety capability-building programme by the Workplace Safety and Health Council. Level 3 certification (AOT Trinity holds Certificate E18947) indicates a documented risk management system is in place for site works.
They provide independently verifiable evidence that a contractor is authorised, safety-compliant, and accountable — reducing risk compared to hiring an unlicensed handyman.
Yes. Work connected to the potable water supply network, including domestic water tank cleaning, should be carried out by or under the supervision of a PUB-licensed plumber.
Unlicensed work on the water supply network can pose contamination risk, void certain protections, and may not meet regulatory requirements — there is no independent accountability trail if something goes wrong.