The USA-Israeli warfare on Iran has uncovered the vulnerability of important water infrastructure in a area that’s among the many most water-scarce on this planet.
This week, Iran’s overseas minister accused the US of striking a desalination plant on Qeshm Island off the coast of Iran within the Strait of Hormuz. The strike reportedly reduce off the water provide to 30 villages. Simply 24 hours later, Bahrain mentioned an Iranian drone had prompted materials harm to one in all its desalination crops close to Muharraq.
The six Gulf states – Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates – are among the many most water-scarce nations on this planet and rely closely on desalination to satisfy the wants of their mixed populations, which exceed 62 million folks.
On this visible explainer, Al Jazeera unpacks how dependent the area is on desalination, how a lot water is produced every year and the way numerous desalination processes work.
The Gulf has no everlasting rivers
The Gulf states are deserts with no everlasting rivers. Whereas they lack rivers, they do have seasonal waterways known as wadis, which carry water throughout uncommon rainfall.
These nations rely totally on groundwater and desalination to produce water to their quickly rising cities, industrial zones and agricultural areas.
The map under exhibits the foremost rivers and waterways in areas surrounding the Gulf.
7.2 trillion litres from desalination
The Gulf nations produce roughly 40 p.c of the world’s desalinated water, working greater than 400 desalination crops alongside their coasts.
The edge the United Nations has set for absolute water shortage is 500 cubic metres (655 cubic yards) per capita per 12 months.
With a median per-capita share of pure freshwater of solely 120 cubic metres (155 cubic yards) per 12 months, subsequently, Gulf nations rely closely on desalination to fill the hole between provide and demand.
In response to a 2023 report from the GCC Statistical Heart, the six Gulf states produced 7.2 billion cubic metres, or 1.9 trillion gallons, of freshwater via desalination. This quantity interprets to about 122 cubic metres per capita per 12 months, or about 334 litres (88 gallons) per day. Nevertheless, their whole put in capability is far larger, estimated at 26.4 billion cubic metres yearly.
One billion cubic metres is equal to 1 trillion litres.
The biggest and most populous of the states – with 37 million inhabitants – is Saudi Arabia. It produced 3 billion cubic metres of desalinated water in 2023, adopted by the UAE with 1.9 billion cubic metres, Kuwait with 0.8 billion cubic metres, Qatar with 0.7 billion cubic metres, Oman with 0.5 billion cubic metres and Bahrain with 0.3 billion cubic metres.
Gulf states’ reliance on desalination
Restricted rainfall, the absence of everlasting rivers and depletion of groundwater reserves have rendered pure freshwater assets inadequate for the quickly rising populations of the Gulf.
With out desalination, water for ingesting and for industrial and agricultural functions can be inconceivable to take care of. In response to knowledge from the GCC Statistical Centre on water manufacturing and consumption, right here is the reliance on desalination for whole water provide in every nation:
Qatar
At 61 p.c, Qatar is essentially the most dependent of the Gulf states on water from desalination. About 22 p.c of its mixed 1.1 billion cubic metres of annual water provide comes from groundwater and 18 p.c from rainwater. Nevertheless, in relation to ingesting water alone, Qatar depends almost solely on desalination, which constitutes greater than 99 p.c of its ingesting water provide for its 3.2 million folks.
Bahrain
Bahrain is the second most depending on desalinated water with 59 p.c of its whole 0.5 billion cubic metres of annual nationwide water provide coming from desalination. For ingesting water, this determine jumps to greater than 90 p.c. Moreover, 32 p.c comes from groundwater and 11 p.c from rainwater, respectively, for its 1.6 million inhabitants.
Kuwait
Kuwait follows with 47 p.c of its 1.7 billion cubic metres of water used yearly obtained via desalination whereas 51 p.c comes from groundwater with rainfall making up the rest.
The UAE
The UAE has a roughly equal combine with 41 p.c of its water derived from desalination and 46 p.c from groundwater with the rest coming from rainwater and handled wastewater. This totals 4.8 billion cubic metres yearly for its 11.5 million inhabitants.
Oman
Oman produces 23 p.c of its whole 2.2 billion cubic metres yearly from desalination for its 4.7 million inhabitants, adopted by groundwater at 69 p.c with the rest coming from rainfall and handled wastewater.
Saudi Arabia
Saudi Arabia produces extra desalinated water than another nation, however with 18 p.c of its whole utilization coming from desalination, Saudi Arabia is the least dependent of the Gulf states on water from desalination, relying as a substitute on groundwater for 79 p.c of its whole water wants. Rainfall accounts for the rest of the 17.3 billion cubic metres the dominion produces yearly for its 37 million inhabitants.
How desalination works
Desalination is the method of eradicating salt and minerals from seawater to make it appropriate for human consumption and irrigation. That is primarily achieved via thermal distillation or reverse osmosis.
Traditionally, the one method to desalinate water was to boil it after which gather the steam to acquire freshwater, which is actually how thermal distillation works.
Seawater is pumped into desalination crops. From there, filters take away sand, algae and particles earlier than the water is heated till it types steam, leaving salt and minerals behind. The steam is then cooled and condenses into pure distilled water. After this, minerals are added, and the water is disinfected to make sure it’s secure for ingesting. Lastly, the water is pumped into municipal pipelines or bottled to be used in properties, companies and industries.
Reverse osmosis, then again, makes use of high-pressure pumps to pressure seawater via a semipermeable membrane that captures salt and minerals whereas permitting water molecules to go via.
This technique has turn out to be the extra in style type of desalination as a result of it’s considerably cheaper to function, makes use of much less vitality and doesn’t trigger thermal air pollution via the discharge of scorching water into the ocean.
