Mare-aux-Vacoas at 45%: 150,000 consumers could be affected

The filling rate of the Mare-aux-Vacoas reservoir having increased to 45.3%, the Central Water Authority is sounding the alarm. For its president, Shiam Thannoo, the situation deserves particular attention, especially since the weather forecasts for the coming months are not encouraging.

According to the president of the Central Water Authority (CWA), the report covering the period from June to August 2026 from the Vacoas meteorological station shows below-normal rainfall. This situation risks further increasing the pressure on the country's water reserves.

“It should be understood that from May to June 2026, the occupancy rate at Mare-aux-Vacoas fell by 5%. According to our latest analyses, we are seeing an average drop of around 5% per month,” he explains.

If the country's main reservoir still has room for maneuver, the CWA prefers to anticipate rather than suffer the consequences of a deterioration of the situation. Shiam Thannoo recalls that from a certain threshold, water distribution could become more complex.

“Even at 22%, we will be able to continue to supply the regions concerned, but we will not be able to do so normally. It is for this reason that it is imperative to put in place measures to avoid a possible social crisis. »

CWA projections indicate that the level of Mare-aux-Vacoas could reach a worrying threshold, assuming that precipitation remains insufficient over the next three months. Such a situation could affect up to 150,000 consumers directly dependent on this reservoir.

Mare-aux-Vacoas is not the only reservoir placed under surveillance. That of La Ferme currently has an occupancy rate of 47%. Even if several other reservoirs still have levels considered satisfactory, the president of the CWA believes that it would be imprudent to wait for the situation to worsen before acting.

“It is not because certain reservoirs are in the green that we should remain idle. We must act now to preserve our resources. »

While awaiting the official announcement of the measures which should be revealed next week, the CWA intends to intensify its awareness-raising efforts. A vast information campaign will be launched in collaboration with the media to encourage consumers to adopt more responsible behavior and reduce water waste.

The concerns expressed by the Central Water Authority (CWA) are echoed in the latest forecasts from the Vacoas meteorological station. In its report on the climate outlook for the period from June to August 2026, the organization forecasts below-normal precipitation for the next three months.

This trend is a continuation of a year already marked by a significant rainfall deficit. After months of November and December 2025 relatively