East Rand Water Care Company

A truly indigenous South African wastewater company providing bulk wastewater conveyance and a highly technical and proficient wastewater treatment service to some 2 000 industries and more than 3,5 million people.

Provision and maintenance of process control systems

Advanced chemical and bacteriological laboratory services

Research and development in water-related areas

Industry-specific training in both the scientific and operating fields

Physical Address: Waterval Farm, Meadow Road, Klip River

The Waterval wastewater care works is the biggest works operated by ERWAT and is situated in the DD6 area at the Klip River.

The first 25 Mℓ/d Module at Waterval WCW was commissioned in 1979 and subsequently modified to treat 30 Mℓ/d. Upgrades in 1989 and 1993 each added further 35 Mℓ/d capacity modules.  An upgrade during 2000/2001 included for a new inlet works comprising screens, vortex degritters, stormflow and sub-standard effluent containment measures.

The plant was originally built to serve parts of Germiston, Alberton, Kathlehong, Vosloorus and Boksburg. Due to continued and rapid growth in the southern area of Ekurhuleni, it became crucial to make provision for additional capacity at this regional wastewater treatment works.

Further extensions involved the building of a fourth activated sludge module at a cost of R170 million. The module was commissioned in 2008. The existing plant consists of a modern preliminary treatment facility, four parallel liquid biological treatment modules and tertiary disinfection before the final effluent is discharged into the Klip River.

The total design capacity of the Waterval wastewater care works is now 155 Mℓ/d.

Capacity : 155.00 Mℓ/d

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ERWAT welcomes new Managing Director

Mr Tumelo Gopane recently joined ERWAT as Managing Director.

“I am honored to have been appointed as ERWAT’s Managing Director. It is a privilege to be part of an organization that delivers high quality services and innovative solutions to its clients and that continuously pursues excellence in the water sector”, says Gopane.

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Important information for suppliers and vendors


National Treasury has introduced the CSD (Central Supplier Database). In line with National Treasury directives ERWAT is no longer accepting vendor applications as from 1 July 2016. All vendors must now register on the National Treasury Central Supplier Database. For more information please visit our "Procurement" page.


War On Leaks Program by DWS

A “War on Leaks” program was recently launched by the Department of Water and Sanitation (DWS), in collaboration with Rand Water.

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Four ERWAT plants received recognition at WISA 2014

Four of ERWAT’s larger wastewater treatment works (WWTW) were recognised for their achievements at a recent conference hosted by the Water Institute of Southern Africa (WISA). These WWTW’s are Waterval, Olifantsfontein, Dekema and Rondebult.

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ERWAT and Stellenbosch University join forces in research

A new research chair, sponsored by the East Rand Water Care Company (ERWAT), will focus on new innovations in water research, as well as upping the skills of researchers, engineers and technical personnel in water treatment and management.

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Telephone: +27 11 929 7000

Facsimile: +27 11 929 7031


General email:

Laboratory email:

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