Mare-aux-Vacoas Reservoir May Hit Critical 20% Level by End of November

Mauritius is facing a serious water shortage warning, with the island's largest and most important reservoir — Mare-aux-Vacoas, located in the central highlands of Plaines Wilhems — at risk of dropping to just 20% capacity by the end of November. The Water Resources Commission (WRC), the government body responsible for managing and regulating the island's water supply, has issued a public appeal urging all residents and businesses to reduce their water consumption immediately. **Why Mare-aux-Vacoas Matters** Mare-aux-Vacoas is the cornerstone of Mauritius's drinking water infrastructure. Sitting at an altitude of around 550 metres in the Plaines Wilhems plateau, it is the largest reservoir on the island and supplies a significant share of potable water to households across the country. When its levels fall sharply, the knock-on effects are felt island-wide — through water rationing, reduced pressure in pipes, and scheduled supply cuts in residential areas. A fill rate of 20% represents a critically low threshold, particularly heading into the hot summer months (November to April in Mauritius), when demand for water rises sharply and unpredictable rainfall patterns can offer little relief. **What Is Causing the Drop?** The reservoir's declining level reflects a broader pattern of insufficient rainfall in Mauritius's central plateau region in recent months. Mauritius depends heavily on seasonal rainfall to replenish its reservoirs, and any prolonged dry spell during the transition into the rainy season puts the water system under stress. **The WRC's Call to Action** The Water Resources Commission is asking residents to adopt practical water-saving habits without delay. While no specific rationing schedule has been publicly confirmed at this stage, the appeal signals that authorities are monitoring the situation closely and may introduce supply restrictions if levels continue to fall. Residents can help by: - Avoiding unnecessary garden watering during the heat of the day - Fixing leaking taps and pipes promptly - Limiting car washing and other non-essential outdoor water use - Reducing shower times and avoiding running taps unnecessarily **What This Means for You** If you live in central or northern Mauritius — areas heavily dependent on Mare-aux-Vacoas — you may already be noticing lower water pressure or intermittent supply. A continued decline toward 20% capacity significantly increases the likelihood of formal water rationing being introduced before the end of the year. Tourists staying in hotels and self-catering accommodation should also be mindful of usage, as the hospitality sector is one of the island's largest consumers of water. Authorities have not yet declared a water emergency, but the WRC's public warning is a clear signal that the situation is deteriorating and collective action is needed now — before conditions worsen. Source: Le Defi Media