Chelsea Fawcett, 5, in hospital with an eye infection. Her mother is set to sue the State Government after her daughter picked up a serious eye infection at the Elizabeth Quay water park.

Forrestfield mother Jannah Fawcett said she would be taking legal action for her daughter Chelsea, who developed an eye infection after visiting the BHP Billiton water park when it opened on January 29.

Ms Fawcett said she needed help to pay for medical bills now her daughter was partial blind in one eye.

It’s unknown whether her sight will return to normal.

“They should have tested that water, and not opened it before they knew it was safe,” Ms Fawcett said.

“It has been an awful experience with Chelsea in hospital and now she has to wear an eye patch and may never get her normal sight back.”

Law firm Slater and Gordon is calling on anyone else who developed health problems after visiting the park to seek legal advice.

The water park was tested the day before it opened.

A type of amoeba, naegleria, was found, sparking an emergency clean overnight.

The park was not retested before it opened to the public.

Two weeks later, tests found the potentially harmful pseudomonas-type bacteria.

It’s believed the State Government has not yet received notice of any legal action.