Sustainability Report

The Cape Flats Managed Aquifer Recharge plant is a key initiative in Cape Town’s long-term water resilience strategy, helping to secure a sustainable water supply while minimising reliance on surface water sources.

• Durable masonry facades: Corobrik Silvergrey Satin face brick was chosen for its long-lasting and low-maintenance properties, as well as having a warm tone that harmonises with the sandy surroundings. This brick mitigates the corrosive coastal conditions while reducing the need for energy-intensive coatings or frequent upkeep.
• Recycled and locally sourced materials: Excavated dune sand from the site was reused as backfill, reducing transportation emissions and material waste.

Low-carbon strategies include:

• Optimised facade design: The filtration buildings feature angled brick fins along their east–west facades, minimising direct sunlight exposure while preventing algae growth in the filtration systems.
• Energy efficiency: The facility’s filtration system is designed as a gravity-fed sequence, reducing the need for energy-intensive pumps.
• Durability and longevity: Given the significant embedded energy in the extensive concrete structures required for subterranean water retention, sustainability efforts focused on ensuring long-term durability. The brickwork and concrete structures were selected to withstand harsh environmental conditions with minimal intervention.
• Passive thermal strategies: The administrative building incorporates passive design elements to optimise natural lighting and ventilation, reducing reliance on artificial climate control.
• Water efficiency: Low-flow sanitary fittings and waterless urinals were installed to minimise water usage.