Is Sri Lanka Running Out of Water?

Picture Credit: by United Nations in Sri Lanka

Sri Lanka is often seen as a lush, water‑abundant island, yet it is now classified as a highly water‑stressed country, using about 90.8% of its available renewable freshwater resources. The country’s total renewable water resources are estimated at roughly 52.8 billion cubic metres per year, or around 2,500 cubic metres per person annually, but there is very little buffer left to absorb growing demand and climate shocks. The real crisis lies in how unevenly and unsafely this water is available to different communities.

Water scarcity in Sri Lanka is driven by climate variability, heavy agricultural use, and weak management. Historically, about 11 billion cubic metres—just over a quarter of total renewable resources—have been withdrawn each year, with 85–95% of these withdrawals going to irrigation. Prolonged dry spells and El Niño events, such as in 2016–2017, have brought floods followed by severe drought, affecting 19 of 25 districts and more than 2 million people, while destroying two harvest seasons in some areas. In recent droughts, authorities have had to deliver emergency water to about 55,000 families in 52 locations, illustrating how close many communities live to the edge of shortage.

Picture Credit: by Institute of Policy Studies Sri Lanka

Access to safe water is also deeply unequal. Only about 60% of Sri Lankans receive pipe‑borne water; the rest rely on wells, small schemes, or rainwater that are highly exposed to drought and contamination. UN‑linked assessments suggest that around 35.6% of the population is vulnerable and deprived in relation to water, with estate and dry‑zone populations facing the greatest risks. Recent analysis shows that the poorest households are 6.8 times more likely to experience extreme water insecurity than the richest, even though per‑capita renewable water availability is more than twice the South Asian average. Since around 80% of rural domestic water and a large share of schemes depend on groundwater, over‑extraction, pollution, and salinity intrusion now threaten the security of millions.

Sri Lanka is therefore not literally out of water, but it is rapidly running out of safe, reliable, and fairly shared water—turning water management into one of the country’s most urgent development challenges.