Water slide safety testing on Steep Hill in Lincoln
Organisers have tested a 100m (328ft) water slide down one of the steepest hills in Lincoln to see if it is safe to be used by members of the public.
Last year, about 400 people were picked from a draw to ride the slide - dubbed the Lincoln Flume by organisers - in Flaxengate.
After testing on Sunday morning, officials said the slide planned for Steep Hill was "much faster".
The Rotary Club of Lincoln Colonia event will take place on 17 July.
Duncan Gerrard, from the Rotary Club, said: "We thought it best to keep testing under wraps until we were sure we could handle it safely."
He said: "The boffins tell me that twice the slope, which this is compared to Flaxengate, will go about four times quicker.
"We've no need for Fairy Liquid this year."
He added they would be using bales to help stop the riders at the bottom of the slope.
Riders will have the chance to buy £3 draw tickets to secure a place at the event, which is aiming to accommodate about 700 people.
Steep Hill tales
- The street, which as its name suggests, has a notably steep gradient
- It was built by the Romans to connect the growing parts of Lincoln - then known as Lindum Colonia
- Famous visitors include former Top Gear presenters Jeremy Clarkson and James May, as well as the cast of The Da Vinci Code, which was filmed at Lincoln Cathedral
- It also held the title of Britain's Best Street