Israel’s gigantic water highway, an example for Germany?


from Benjamin
How a desert state became a water exporter
Water scarcity is one of the greatest challenges of our time worldwide. Israel, a country with hot, dry summers and little rainfall, has long been particularly affected. Since its foundation in 1948, the state has struggled with chronic water shortages. Today, however, Israel produces around 20 percent more water than it needs itself – and even exports technology and know-how to other countries.
Getting there was a tour de force. At the heart of this development is an impressive water infrastructure project: the so-called water highway. Today, it is a symbol of innovative strength, technical courage and strategic thinking.
The story of a courageous vision
Back in the 1930s, the British engineer Walter Clay Lowdermilk developed the idea of diverting water from the Jordan region to the dry south of Israel. Decades later, the young Israel took up this vision again. In 1953, construction began on the National Water Carrier – a system of canals, tunnels, pipes and pumping stations that stretches 130 kilometers from the Sea of Galilee to the Negev Desert.
The implementation was risky and expensive. Israel incurred high debts to finance the project. But the investment paid off: With the water from the north, entire regions in the south could be developed and used for agriculture.
A technical masterpiece
The water carrier begins at the Sea of Galilee, where the water is raised to over 200 meters above sea level using powerful pumps. From there, it flows through tunnels and canals, including the 17-kilometer-long Eshkol Tunnel – once the longest water tunnel in the world. The water is purified in the Eshkol reservoir before being transported further south through the center of the country.
A sophisticated distribution system supplies towns, villages and fields along the way. At the same time, care was taken not to jeopardize the ecological balance in the Sea of Galilee.
From agricultural land to regional water source
In the early years, most of the water was used for agriculture. But over time, the proportion of drinking water increased. In the 1990s, the National Water Carrier already covered around half of Israel’s drinking water needs. Neighbouring countries such as Jordan also benefit – Israel supplies up to 50 million cubic meters of water there every year.
But the Sea of Galilee is fragile. A long period of drought from 2012 onwards caused the water level to drop dramatically. Israel had to rethink again – and found the solution in the sea.
Salt water becomes water of life
Desalination plants along the Mediterranean coast have become the new beacon of hope. The principle: seawater is filtered, salts and minerals are removed and the purified water can then be used – for households, agriculture and industry. Israel experimented with reverse osmosis back in the 1960s. The big breakthrough came in the early 2000s with the plant in Ashkelon.
Today, desalination plants cover around 80 percent of Israel’s drinking water needs. And since 2022, something unique has been happening worldwide: desalinated water is being fed back into the Sea of Galilee to stabilize its level. A 13-kilometre-long pipeline was laid to connect the desalination infrastructure with the lake.
Circular economy and high-tech irrigation
In addition to desalination, Israel is also pursuing other avenues. Today, over 90 percent of wastewater is treated and reused – primarily for irrigation in the south. The heart of this system is the wastewater treatment plant in the Dan area near Tel Aviv.
The country also consistently relies on drip irrigation: water reaches the roots directly instead of evaporating. This allows more crops to be grown with less water – a key technology for agriculture in arid regions.
Knowledge that changes the world
Israel’s water management is considered a role model today. Companies such as IDE Technologies, Netafim and Mekorot are active worldwide – in India, China, Australia and the USA. They help other countries to deal with water scarcity.
But the challenges remain. Climate change is causing more frequent droughts and geopolitical tensions around the Jordan River are creating uncertainty. Israel is therefore continuing to invest in research – for example in solar-powered desalination, water extraction from the air and new recycling technologies.
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