Aeration Treatment Systems
Noblewater
http://www.atsystems.com.au/

Water and Waste Treatment NZ Ltd
A New Zealand owned company specialising in the supply of water and wastewater treatment systems and related equipment.
http://www.wwt.co.nz/

Pure Aqua Inc
Pure Aqua offer wide array of water treatment and commercial water purification systems. We are a leading manufacturer and wholesale distributor of water purification systems. We supply pre-engineered as well as custom engineered solutions for all water purification needs.
http://www.pure-aqua.com/

Sun Enviro
Providing effluent treatment and waste water treatment plants, water reuse systems, mechanical equipment for effluent treatment plants, aerators, clarifiers, clariflocculators, oil skimmers, Lamella clarifier and flash mixer.
http://www.sunenv.com

Sparrow Water
Supply of parts, installation and maintenance contracts and services for waste water and sewage systems. Clean water systems including boreholes, filtration and treatment are provided.
http://www.sparrownewman.co.uk/

Chemical Waste Management
Chemical Waste Management (CWM) provides Environmental Engineering Services to local and foreign countries; specialises in Water Treatment, Wastewater Treatment, Solid Waste Management, Infrastructure Development. Based in Selangor, Malaysia
http://www.cwm.com.my

Non Chemical Water Treatment Systems
Lehmier Electric specializes in non-chemical water treatment, automatic emergency backup generators, and Electric-Saver systems.
http://www.lehmierelectric.com

Huber Technology
Homepage: Huber Technology UK - Rotamat Ltd.
http://www.huber.co.uk/

Advanced Water Engineering, Inc.
We manufacture commercial Industrial water treatment equipment De-Ionized Water Systems;Water Softening Equipment;Ion-Exchange Equipment; Specialty Filters and Filtration Equipment;
http://www.advancedwater.com/

Delft University of Technology
Department of Sanitary Engineering. Research and education programs on the 'urban water cycle', namely, including drinking water supply, waste water collection and urban drainage, and waste water treatment.
http://www.citg.tudelft.nl/live/pagina.jsp?id=f101fd4d-f95a-41eb-a561-2a555b90a58d&lang=en