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: Bapsfontein Road, Kaalfontein located to the East of Kempton Park.

The works was built in 1977 and receives effluent from industries in Spartan and Isando and households in the Kempton Park area.

The Hartebeestfontein works differs from the traditional activated sludge works in that it utilises a two-stage, two-culture activated sludge process. Each stage is a complete processing unit comprising of aeration, clarification and sludge return. The primary stage is aimed principally at COD (Chemical Oxygen Demand) removal and the secondary stage for nitrification. The initial comprised of three 10 megalitres per day treatment modules totalling 30 megalitres per day.

In 1986 a side-stream Phostrip (biological phosphate removal) plant was retrofitted. This was followed by the addition of a third inlet works module in 1992 and a single 15 megalitres per day treatment works resulting in a total treatment capacity of 45 megalitres per day. The works was recently refurbished at a cost of R65 million, including the building of a new balancing tank and the increase of reactor volume and aeration capacity.

In 1995 a tertiary treatment system was designed and implemented to handle chemical dosing to ensure an even more effective phosphate removal.

Effluent from the Hartebeestfontein works flows via the Swartspruit to the Rietvlei Dam. Bio-solids are land applied and ploughed in.

Capacity : 45.00 Mℓ/d

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ERWAT will be participating in the biennial WISA conference and exhibition from 24 to 27 June 2018 at the CTICC in Cape Town. Besides some of ERWAT’s employees presenting interesting papers, the company will also showcase its products and services at stand number D10-11.

ERWAT will also be taking part in panel discussions and sharing insights into the challenges and opportunities facing the water sector in South Africa and beyond our borders.


ERWAT AT AUW 15-17 MAY 2018

ERWAT will once again be exhibiting at the African Utility Week (AUW) from 15 to 17 May 2018 at the ICC in Cape Town. Visit us at stand number M13c to learn more about what ERWAT can offer.

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.


Welgedacht WWTW extended with 50 megalitres per day


Excitement filled the air on Monday, 9 May 2016 when the Executive Manager: Operations, Mr Fortune Mabunda, switched on the pumps to start pumping the first wastewater through the new 50 megalitre per day (Mℓ/day) extension at ERWAT’s Welgedacht Wastewater Treatment Works (WWTW).

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Telephone: +27 11 929 7000

Facsimile: +27 11 929 7031


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