Can Lesotho Solve Johannesburg's Water Crisis?

Summary

• The Polihali Dam project in Lesotho is critical for securing water supply for Johannesburg, South Africa, which currently sources ~60% of its water from Lesotho.
• The new dam is nearly 20% larger than the existing Katse Dam and is being built higher in the mountains to capture more runoff, with water delivery projected for 2028.
• Water sales generate about $300 million in annual royalties for Lesotho, a strategic revenue stream for a country with a ~$2 billion economy dependent on textiles and diamonds.
• South Africa faces urgent domestic risk due to aging, overstrained water infrastructure in Johannesburg (Gauteng province), increasing the political pressure for the Polihali project.
• The project is reportedly halfway complete but faces acknowledged delays due to a "myriad of issues," including potential contractor performance problems.
• The Lesotho Natural Resources Minister cautions that more infrastructure alone is not a solution unless South Africa improves upstream catchment management to ensure sustainable water supply.
• For Lesotho, the project is a bid for economic sovereignty and energy independence, aiming to expand hydropower and add floating solar to become a net exporter of renewable energy.
• The project is financially backed by China and represents a significant geopolitical and economic development for the region.