Mauritius Reservoir Levels Drop to 51.6%, Far Below Last Year
Average water reservoir fill rates in Mauritius have fallen to 51.6% in 2026, compared to 77% at the same period in 2025, raising fresh water supply concerns.
Water reservoir levels across Mauritius have dropped sharply, with the average fill rate now standing at just 51.6%, compared to 77% recorded during the same period in 2025. The significant year-on-year decline is raising renewed concerns about water availability for households, businesses and agriculture on the island.
Mauritius relies on a network of reservoirs to supply drinking water to its population of around 1.3 million people. The main reservoirs include La Nicoliere in the north, Mare aux Vacoas in the central plateau, and Bagatelle Dam near Moka. These sites are managed by the Central Water Authority (CWA), the public body responsible for water production and distribution across the island.
A drop of more than 25 percentage points compared to last year is considered substantial. Reservoir levels are directly affected by rainfall patterns, and a drier than usual period, combined with higher demand during warmer months, can cause levels to fall quickly. Mauritius typically counts on cyclone-season rainfall between November and April to replenish its water reserves.
When reservoir levels fall below certain thresholds, the CWA often introduces rationing measures, restricting water supply to specific districts on a rotating schedule. Residents in areas already prone to cuts, particularly in the north and parts of the east, may experience longer or more frequent interruptions if levels continue to decline.
The situation also has implications for agriculture. Sugar cane growers and vegetable farmers depend on irrigation, and a shortage of water at the reservoir level can affect crop yields at a time when food prices are already a concern for many Mauritian households.
What this means: If you live in Mauritius or are planning an extended stay, this is a story worth watching closely. A fill rate of 51.6% with weeks still to go before the wet season fully sets in means the margin for comfortable supply is narrowing. Households should be aware that water rationing schedules could be extended or introduced in new areas. Businesses, hotels and industries with high water usage may also need to plan accordingly. The government and CWA have not yet announced emergency measures, but the gap with last year's figures suggests the situation could deteriorate if rainfall remains below average in the coming weeks.
Source: Le Defi Media
Frequently Asked Questions
Which are the main reservoirs in Mauritius and who manages them?β
The main reservoirs in Mauritius are La Nicoliere in the north, Mare aux Vacoas on the central plateau, and Bagatelle Dam near Moka. They are managed by the Central Water Authority (CWA), the government body responsible for water production and distribution across the island.
What happens when reservoir levels are low in Mauritius?β
When levels fall significantly, the Central Water Authority (CWA) typically introduces rotating water cuts, restricting supply to different districts on a scheduled basis. Areas in the north and east of Mauritius are often among the first affected by rationing measures.
How do this year's reservoir levels compare to 2025 in Mauritius?β
As of the latest figures reported by Le Defi Media, the average reservoir fill rate in Mauritius stands at 51.6%, down sharply from 77% recorded at the same period in 2025, a difference of more than 25 percentage points.
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