Another high-profile incident saw 20 people injured by acid spray in a London nightclub in March.
Arthur Collins, ex-boyfriend of The Only Way Is Essex star Ferne Mc Cann, was charged with that attack.
Another man was seen sitting on the pavement as he had his blood pressure taken by the medics.
Terry Hollins, 43, who lives in Burnham Street around the corner from the attack, said: 'I was driving home at the time just after the attack around 7pm.
Man-made climate change is blamed for making the problem worse.
For many people in Britain there has been no avoiding the jet stream's effects.
They are generally found between 23,000ft and 39,000ft - perfect altitudes for cruising airliners - and are caused by a combination of the earth’s rotation and heat from the sun.
But at only 10 miles across and about 2000ft deep it takes skill, planning and a bit of luck to ride one for an entire route.
They said: 'We have got acid on us, we have got acid on us.''They were pouring the water over themselves in the shop, and it had got into their clothes.
One of them was pouring it down his trousers.'I was really scared. One of them was saying: "Put the water in my jeans".'Witnesses said a blue tarpaulin was erected to shield the victims from the public.
One of the victims, Shakwat Hussain, 24, is due to be released from Broomfield Hospital in Chelmsford today after being treated overnight at a specialist burns unit.
He and a friend flagged down a police car for help before running into a shop screaming in agony for help after the liquid was thrown on them.