The water situation in Mauritius continues to deteriorate, with Mare-aux-Vacoas, the country's main reservoir, currently at 38.7% capacity. If consumption rates remain steady and significant rainfall does not occur, the reservoir could drop to 20% by November and 10% by December. This has raised concerns about the potential for a water crisis, particularly in regions that rely heavily on this source.
According to Shiam Thannoo, Director General of the Central Water Authority (CWA), the situation is particularly delicate. He notes that Mare-aux-Vacoas' capacity fluctuates between 38% and 39%, but with current consumption rates and the absence of significant rainfall, the reservoir could reach critically low levels. This would make pumping more difficult, directly impacting water distribution.
The situation is expected to worsen as the year progresses, with forecasts suggesting that Mare-aux-Vacoas could reach 10% capacity by December if rainfall does not improve. This comes as water distribution is already restricted in several regions. The CWA had published regulations for the 2026 dry season in August, and the situation is being closely monitored, particularly in the North.
The Nicolière reservoir, which serves the northern region, is currently at around 44% capacity, but restrictions are already in place due to water deficits. Shiam Thannoo notes that the northern region has unique challenges, including private households and small planters that will soon require additional water supplies for new crops.
In response to the situation, the Ministry of Public Services and the CWA are holding meetings to prepare for the next steps. A meeting with concerned parties was held on September 23, and measures are expected to be announced soon. The goal is to reduce pressure on reserves without further penalizing consumers.
The CWA is working on several scenarios, including potentially using the Bagatelle Dam to supply regions such as Hautes-Plaines-Wilhems and reduce reliance on Mare-aux-Vacoas. However, the situation remains dependent on factors beyond the authorities' control, such as rainfall. Meteorological data shows minimal rainfall in recent days, and forecasts do not indicate a significant change in the near future.
Meanwhile, experts such as Prem Saddul, a hydrogeology consultant, argue that desalination is not a viable solution for Mauritius. He believes that the country should focus on addressing weaknesses in its water capture, storage, and distribution systems rather than pursuing desalination, which he sees as costly and potentially environmentally damaging.
Key points
- - The water level in Mare-aux-Vacoas could drop to 20% by November and 10% by December if rainfall does not improve. - The CWA is exploring alternative solutions, including the potential use of the Bagatelle Dam. - Experts argue that desalination is not a suitable solution for Mauritius due to its high cost and potential environmental impacts.
