More than 60 people claim to have been made ill by a contaminated water play feature.
Hull Council was told it needs to carry out “extensive” work before the play feature at East Park can open again.
Sickness and diarrhoea
Dozens of people are said to have suffered from sickness and diarrhoea – two of whom required hospital treatment.
Water samples taken from the feature showed unsatisfactory levels of bacteria and cryptosporidium spores.
Around two thirds of those affected were aged nine or under, including the four and one-year-old sons of Lyndsey Holmes, who were ill for weeks.
Public Health England examined the cryptosporidium infection found there had been inadequate chlorination at the feature, which was also situated close to the toilets, which could have meant the holding tank receiving contaminated water during periods of heavy rainfall.
Eight accident claims have already been settled by the council, which faces paying out tens of thousands of pounds in compensation.
Another 54 claims are still to be dealt with.
The council said its priority is the safety of its residents and users of the facilities, and is working with Public Health England on the matter.
Source: Yorkshire Post