8 Best Water Tank Cleaning Services in Singapore (2026)
Compare 8 water tank cleaning services in Singapore for condos, landed and commercial buildings — PUB-licensed plumbers, disinfection and annual certification.
- Edited by
- Amir Wahab
- Published
- Reading time
- 5 min read
AI image by LocalRankIn Singapore, buildings that store potable water in tanks must have them cleaned, disinfected and certified by a PUB-licensed plumber at least once every 12 months under SS 636 — whether that is a condominium's rooftop tanks, a landed home's storage tank or a commercial building's supply. The specialists below all operate here and publish their tank-cleaning methods on their own sites, from draining, scrubbing and chlorine disinfection to lab water testing and the PUB submission that closes the job. Use this list to match a firm's experience and reporting to your property, then confirm scope, scheduling and certification directly.
1. WaterTank.com.sg
WaterTank.com.sg is a long-running plumbing and tank specialist that says it has cleaned Singapore storage tanks since the late 1980s, working largely with MCSTs and condo managements. It pairs sterilisation and internal inspection with lab testing of water samples, and states it handles the PUB submission that follows a clean. The same team installs and repairs stainless-steel and pressed-steel tanks and pumps, so it can quote remedial work if an inspection turns up defects. It publishes bizSafe Star and BCA credentials on its site.
2. Waves Fluid Engineering
Waves Fluid Engineering runs potable-tank cleaning as an engineering line rather than a sideline, covering condominiums, commercial buildings, factories and shopping complexes as well as homes. Its described routine drains and internally cleans the tank, sterilises it, then sends samples for chemical and bacteriological lab analysis, with a PUB-licensed plumber supervising the certification the law requires every twelve months. The firm also inspects for leaks and defects, supports the PUB submission, and offers pump maintenance and repair. It lists ISO 9001:2015 and bizSafe Star certifications and 24/7 availability.
3. Alpha & Omega Trinity (AOT)
Alpha & Omega Trinity trades as AOT and publishes a PUB plumber's licence number on its water-tank page, positioning itself for the annual clean and certification that SS 636 requires. Its process combines high-pressure washing and biofilm removal with food-grade chlorine disinfection said to follow NEA guidelines, then pre- and post-clean testing of turbidity, pH and coliforms. It issues the written completion report used for compliance records, inspects for cracks and corrosion, and can carry out repairs such as lid and float-valve replacement. It says it services HDB, condo, landed, commercial and industrial tanks.
4. Sureclean
Sureclean is an NEA-licensed cleaning company that offers water-tank cleaning alongside its broader disinfection and specialist-cleaning work, and says it coordinates with MCSTs and building managements as well as individual households. Its published routine isolates and drains the tank, removes sludge, scrubs the interior, then disinfects with chlorine checked to a target PPM before inlet, outlet, overflow and float-valve components are inspected. Samples go to a lab for total viable count and E. coli, and jobs close with a certificate and before-and-after photos. It states it carries public-liability insurance and covers every postal sector.
Islandwide (every postal sector)
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5. Ace Building Services
Ace Building Services approaches tank cleaning as part of a wider facilities-management offering, which suits owners who already outsource building upkeep and want the annual water-tank clean handled by the same contractor. It describes a full-cycle job: inspection and safety assessment, draining and sediment removal, high-pressure cleaning, disinfection with approved agents, then rinsing, refilling and water-quality testing to demonstrate PUB compliance, closed out with documentation. It says licensed plumbers carry out the work and that it serves residential, commercial and industrial buildings. A reasonable fit where tank cleaning is one line in a managed-property contract.
6. TankTech
TankTech focuses squarely on water storage tanks and pitches directly at building owners and MCSTs handling the annual PUB clean. Its described scope runs from draining and ventilating the tank through rust, encrustation and sediment removal, chlorine disinfection and water sampling, to the PUB certification and submission. It highlights confined-space entry permits for crews working inside tanks, and can replace tank covers and fit security measures such as stainless-steel brackets and high-security padlocks to protect the water supply afterwards. A pick worth shortlisting when the tank itself, not general cleaning, is the job.
7. SG Maintenance Group
SG Maintenance Group is a general building-maintenance and plumbing outfit that lists water-tank cleaning as a dedicated service, handled by what it describes as licensed water service plumbers. Its published steps are a condition inspection, draining with water sampling, deep cleaning and any repairs using non-toxic methods, sanitising to remove bacteria, then refilling and final tests before hand-back. Its FAQ suggests an annual clean for most tanks and twice yearly for heavily used ones. Because it also covers plumbing, leak detection and waterproofing, it can be convenient where a tank issue sits alongside other repairs.
8. PrimeAsia Plumbing and Sanitary
PrimeAsia Plumbing and Sanitary is a BCA-registered plumbing and sanitary contractor that lists water storage tank cleaning and tank rectification among its services, which fits owners who want a licensed plumbing firm rather than a general cleaner. It describes removing rust, encrustation and sediment, sterilising its equipment before each job, and sending water samples to a Singapore Accreditation Council SINGLAS-accredited laboratory, with medically certified workers entering the tank. It notes annual cleaning is mandatory for commercial and institutional tanks. Confirm current scheduling and PUB documentation directly, as the site's published details read as a few years old.
Islandwide
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How to choose
- Check the firm works with, or is, a PUB-licensed water service plumber — annual potable-tank cleaning and certification under SS 636 must be signed off by one, and the licence is what makes your PUB submission valid.
- Match experience to your property: cleaning a condominium's rooftop tanks with an MCST and coordinating water shut-offs across many units is a different job from a single landed-home or commercial tank.
- Ask exactly how they disinfect and what they hand back — the disinfectant used, whether samples go to an accredited lab for bacteriological testing, and whether you get a written report and certificate for compliance records.
- Confirm scheduling and frequency: most providers work to an annual clean, with more frequent visits for heavily used or higher-risk tanks, and agree timing that minimises disruption to the water supply.
- For confined tanks, check safe-entry practice — confined-space permits and trained or medically-cleared crews — and ask whether the firm carries public-liability insurance for work inside your water system.
- Get a transparent, written scope before booking: draining, sludge removal, scrubbing, disinfection, inspection of pipes and valves, refilling and testing, plus any repair quoted separately if defects are found.
. No changes recorded since.
Founder and Editor
Amir Wahab is the founder and editor of LocalRank, an independent Singapore rankings and local guides publication.
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