Physical Address: Vorsterkroon, Nigel

The Carl Grundlingh works is situated north of Nigel and falls within the DD5 drainage district. It was built in 1977 and upgraded in 1984. It is designed to treat 2,5 megalitres per day of industrial effluent and raw sewage from the Dunnottar, Sharon Park and Marievale areas. Activated sludge is employed as the main treatment process.

A central inlet works, incorporating the processes of screening and grit removal serves the works. The BNR activated sludge process includes a three stage reactor basin and final clarification. The final effluent is chlorinated before discharging it into the Nigel Dam. The outflow of the dam flows into the Blesbokspruit.

Capacity : 2.00 Mℓ/d