Meat production uses an astonishing amount of water. Example: to produce a kilo of beef takes about 50,000 litres of water. Compare that with rice, which takes about 1000 litres, or chicken a mere 4,500 litres. As people are getting wealthier, they are eating more beef,so water demands are going up.
Apparently in the USA, the averge water usage per head is 500litres - in the UK it's 200 and in places like Gambia it's less than 10.
Must get the leak fixed in the header tank...
The rather shocking Vegetarian Now!