Short version: water, not oil, is the real lifeline

Back in 1983 a US intelligence assessment made a blunt point: the Gulf’s most crucial commodity is not oil, it is desalinated drinking water. Fast forward to this weekend and that old warning felt less like history and more like a live-wire alarm.

What happened, in plain terms

Tensions flared when a desalination plant on the island of Qeshm in the Strait of Hormuz was reported attacked, and fingers were pointed across the region. One government accused an outside power of striking the plant. The accused denied it. Then another Gulf state reported damage to a coastal plant and blamed a neighbouring country. For a few breathless hours it looked as if the region might spiral into tit-for-tat attacks on water infrastructure.

And then, quietly, the attacks stopped. No one cheered. No one celebrated. The silence raised a familiar question: why are these plants so sensitive, and why would anyone bother attacking them in the first place?

Why desalination matters so much

Most Gulf states get a very large share of their drinking water from converting seawater to potable water. To give a sense of scale:

  • Saudi Arabia gets roughly 70% of its drinking water from desalination.
  • Oman relies on desalination for about 86% of its potable supply.
  • United Arab Emirates uses it for about 42% of its drinking water.
  • Kuwait draws around 90% of its drinking water from desalination plants.
  • Even countries with rivers and other sources depend on large coastal plants for a significant share of water.

The wider Middle East produces roughly 40% of the world’s desalinated water, delivering tens of millions of cubic metres a day. In short, many modern cities along the Gulf coast simply would not keep running without this infrastructure.

Why these plants are tempting targets

There are a few stark reasons why a strike on desalination infrastructure could cause big problems fast:

  • Many cities depend on only a handful of large coastal plants, so damage to one or two can cut off big chunks of the supply at once.
  • Desalination facilities are complex and not quick to repair or replace, unlike many industrial sites that can be patched up faster.
  • Water shortages are immediate and visible. If taps run dry, panic and unrest can follow in a matter of days.

Collateral damage is not just political

Beyond human hardship, hitting desalination plants can cause environmental problems. Processes and chemicals used at these facilities include things like chlorine-based treatments and acidic compounds. Damage could release hazardous substances into the local environment, compounding the humanitarian toll.

So why did attacks stop?

Experts suggest a mix of reasons, most notably simple strategic restraint. Attacking civilian infrastructure that supplies millions of people with drinking water risks severe humanitarian consequences and international condemnation. Escalating strikes on water systems could broaden a conflict in ways very few actors want, or can control.

There is another angle: some countries in the region also face serious water stress at home. For example, long-term drought, over-extraction of groundwater and changing climate patterns have already pushed certain states into precarious water situations. Damaging your neighbour’s water systems in retaliation could invite reciprocation that worsens your own shortages.

Where this leaves the region

The possibility of attacks on desalination plants has been known for decades. The difference now is the scale and criticality of the installations. A successful strike on several major plants could force rationing in whole cities and trigger civil unrest.

Rhetoric has heated up, with leaders on all sides warning of proportional responses if critical infrastructure is hit. That makes clear one thing: water is both a lifeline and a vulnerability. In the Gulf, knocking out a faucet can be a strategy. For now, cooler heads seem to have paused those moves, but the underlying weakness remains.

Bottom line: desalination keeps Gulf cities functioning, but it is also a single point of failure. Damaging a few plants would not just inconvenience people, it could spark shortages, environmental harm and unrest. That is why most actors appear reluctant to push that button — for now.