Cape Town: Wildevoëlvlei wastewater facility treated for R280 million upgrade. The City of Cape Town is investing R280 million to upgrade the Wildevoëlvlei Wastewater Treatment Works (WWTW) in Kommetjie, to improve treated effluent quality and helping to safeguard local waterways and the surrounding environment.
Constructed in 1977, the Wildevoëlvlei WWTW services Fish Hoek, Kommetjie, Noordhoek, Ocean View, and Masiphumelele, with a maximum capacity of 14,5 ML/day. Its first upgrade was observed in 1999 increased capacity from 7,5 ML/day to 14,5 ML/day.
The plant employs eight permanent and three EPWP staff and is located in the scenic seaside town of Kommetjie. The facility uses a conventional activated sludge system:
- Preliminary treatment: Screening and de-gritting to remove large foreign material and trash as well as stones, grit and sand.
- Secondary treatment: Biological reactor and carouse to break down the organic matter as well as nitrogen and phosphorus in sewage.
- Sludge handling/dewatering: enables the sludge to be disposed of safely offsite.
The treated effluent processed at the WWTW is of a good standard and flows into the Wildevoëlvlei, which drains into the ocean via Kommetjie Beach.
The current refurbishment includes a new, larger-capacity dewatering facility featuring the latest mechanical equipment, scheduled for commissioning by November 2026. Full project completion is expected by April 2027.
Member of the Mayoral Committe for Water and Sanitation – Councillor Zahid Badroodien said that the City of Cape Town is committed to invest in its Wastewater Treatment Plants. This facility was earmarked for upgrades due to ageing infrastructure.
Six months into the upgrade, progress is on track, and these improvements will ultimately enhance treated effluent quality and organic load control. They are looking forward to see the work completed next year.
The upgrade also involves refurbishing existing mechanical equipment, such as mixers and aeration systems, to enhance biological treatment efficiency. These improvements will increase operating capacity, boost operational efficiency and further improve effluent quality.
Plans are also in place for a treated effluent pump station valued at R40,4 million (incl. VAT), with construction expected to start early in 2026. This facility will improve access to treated effluent in Kommetjie and neighbouring areas, supporting the City’s goal of reducing pressure on drinking water resources.
Another capacity upgrade is planned for 2032, with current planning and design work already under way.