Allied Professional Services Ltd. (APS) incorporates in Hong Kong since business in 1992 as a specialist contractor on environmental services :- water supply ; drainage sewers and etc. APS specialized in pipe cleaning using High Pressure Water Jetting (HPWJ) techniques, inspection of drainage systems using Closed Circuit Television (CCTV), emptying of grease traps, septic tanks and petrol interceptors (vacuum tankers (VT)). We also provide full range of special inspection on Infrared (Thermal Image) survey, underwater sonar survey, confined space turnkey project.

Drain cleaning operations are carried out to the UK standard as taught by Water Training International (WTi) and the UK Association of High Pressure Water Jetting Contractors (AHPWJC).

CCTV inspection operations are undertaken to the standards defined in the Sewerage Rehabilitation Manual Edn.3&4 (SRM3&4) and as specified in the Manual of Sewer Condition Classification (Edn.4) published jointly by UK Water Industry & Operations Committee & Water Research Centre (WRc). Other standards such as NASSCO & AWWA (USA) use similar standards that APS are aware of and use when so directed by clients.

These standards are widely used in Hong Kong and all government departments having responsibility for drainage systems use the UK system as their standard.

APS maintains all necessary insurance for third party liability, workers compensation and all vehicle, plant & equipment.

Allied Professional Services Ltd. Website:

Tel: 2242 6822   Fax:2242 6811   Whatsapp:6293 3365

Address : Unit D, 23/J., Phase 3, Golden Dragon Industrial Centre,172-180 Tai Lin Pai Road,Kwai Chung, N.T.