Vietnam water security: drought, pollution, the way out

In mid-May 2022 the United Nations Convention to Combat Desertification (UNCCD) published Drought in Numbers, and the figures were sobering. Since 2000 the number and length of droughts worldwide have risen by 29%. Vietnam is no exception. The country holds only 4,400 m3 of water resources per person each year, well below the global average of 7,400 m3.

Water scarcity in Vietnam is not a distant warning. It is already reshaping farms and the rural households that depend on them. This piece traces the socio-economic damage water shortage is doing, weighs the measures tried so far and why most have fallen short, and sets out what it would take to secure fresh and clean water for the country in the years ahead.

Agriculture and the Mekong under strain

Agriculture accounts for more than 70% of Vietnam’s total water use and provides about a third of the country’s jobs. The sector sits at the centre of the economy and of rural life, spanning crop production, animal husbandry, fisheries and forestry. A tropical climate, fertile soil and abundant water let the country build a diversified commercial agriculture over four decades of reform, feeding both domestic and global demand.

That foundation is now cracking. Farmers are short of fresh and clean water. Droughts grow harsher with the changing climate, more dams rise along the upper Mekong, and the authorities have not intervened enough. The result is water pollution, lopsided distribution of supply, salinity creeping inland, and a widening gap between rich and poor. Vietnam’s standing as the second-largest agricultural exporter in Southeast Asia and the fifteenth worldwide is exposed too. The Mekong waters the largest rice crop in the western provinces; choke that flow, and the country loses bargaining power with its international peers.

Industrial pollution and the rural water gap

In March 2018 the Clean Water Alliance and the Centre for Environmental and Community Research (CECR), part of the Vietnam Union of Science and Technology Organizations, set out how industry has degraded water quality. Roughly 70% of waste from industrial zones is discharged straight into the environment. That contaminated water carries hazardous, disease-causing chemicals. Pollution is the single biggest threat to the watersheds that drain into outlets across the country. In the worst-hit areas, sewage has fouled the air until it turns foul-smelling and toxic.

Rural residents bear the brunt of the sanitation crisis. Only 39% of rural people can reach clean water. Most of the rest sink wells into the aquifers to make up for the shortfall in clean surface water. Those makeshift wells weaken and destabilise the soil. Near rivers and the coast the damage is acute: the wells drive landslides, scar the land, and leave the ground even more fragile when storms and floods arrive.

Why the reservoirs failed

Building water reservoirs looked like another answer. On paper it is a sound one for storing Vietnam’s heavy rainfall, which runs from 700 to 5,000 mm a year. In practice the lakes are usually built by clearing large tracts of nearby forest. Natural forest does far more to regulate Vietnam’s tropical monsoon, its sturdy-rooted trees and dense canopy holding water in a way no concrete basin matches.

Many reservoir projects are also built carelessly, without proper planning or genuine expert oversight, wasting time, money and forest. The record speaks for itself. The Krong Pach Thuong irrigation reservoir, launched by the Ministry of Agriculture and Rural Development with more than VND4,400 billion committed, stalled. So did the Ban Mong reservoir in Nghe An, still unfinished after ten years of work and VND3,740 billion spent.

Desalination as a working precedent

If clean and fresh water is to flow for households, farms and factories, Vietnam needs to test ideas that break with the old playbook. One that the world has already put to work is turning seawater into drinking water. Israel, a leader in desalination, plans to pump surplus salt water from its desalination plants into the Sea of Galilee, a sea drained by overuse and threatened by a changing climate.

Israel will reverse the flow through a vast network of pumps and tunnels dating to the 1960s. Its authorities see the project as a first step toward bringing their desalination and water-management technology to the world stage. The lesson for Vietnam is not to copy the engineering but to accept that bold, tested infrastructure can change the equation where patchwork fixes cannot.

Awareness has to come first

Technology alone will not carry Vietnam. Awareness matters as much. Every citizen needs to grasp the state of the country’s water, the reality of climate change, and the heavy economic and political toll of drought.

That means government agencies and private organisations alike teaching water-saving habits through school curricula and other channels. Only when Vietnamese people pull in the same direction on protecting water can the larger projects ahead actually succeed.

Conclusion

Vietnam’s water problem is not one failure but a chain of them: a drying climate, dammed rivers, untreated industrial waste, a rural majority cut off from clean water, and reservoirs that wasted forest and capital without delivering. Each tried fix has addressed a symptom and missed the system.

The way out runs on two tracks at once. New infrastructure, desalination among the options worth testing, and a population that understands what is at stake and changes how it uses water. Neither works without the other. Secure the water, and Vietnam protects its farms, its exports and its standing. Fail to, and the cost lands first on the people who can least absorb it.

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