What does L/S stand for?

Up to 450 litres per second discharged into Ffynnon y Ddol and Clwyd estuary for 17 hours.

The tested well was set at a depth of 53 metres and pumped brine to the solar ponds at a rate of 16 litres per second.

amp;#8220;I always really enjoyed North Head and working on the largest pumps: 1000 litres per second,” grins Mr Richardson.

An EA spokesman said: "Two pumps are in use capable of pumping up to a total of 250 litres per second to the sewer.

Shah gives the analogy of a pipeline in terms of future expansions - "if the capacity of the pipeline is 10 litres per second and you are only pushing through two litres per second, you are not using the pipeline.

The project, which will be operational in December 2011, involves the construction of a raw water intake at the Al Wahda dam, a treatment plant with a capacity of 360 litres per second and a pumping station, the installation of 36 km of raw and treated water supply system as well as the setting up of two tanks of 1,000 m3 each.

The device works by sucking in air, boosting its speed by 15 times then pumping it out at 405 litres per second.