Catherine says when Joshua was younger, she would be in the pool with him so it wasn't a problem.
"Now he is 10, he wants to be able to do things without me tagging along, so I needed to find a way that people would know he couldn't hear."
Catherine talked to Andrea Wilkie, manager of the Stratford TSB Pool, about the problem, which she says was made worse when she overheard other parents talking about her son, thinking he was being badly behaved when he ignored instructions from the lifeguards.
"They didn't know him so thought he was being naughty, when in fact he hadn't heard the lifeguard at all."
Andrea says she understands Catherine's concerns, and agrees it would help Joshua, and others like him, if people were aware of their hearing loss.
"When it comes to safety issues, if lifeguards know someone can't hear, then they can make sure they are communicating in a way that a person can understand."
Talking to Andrea was, says Catherine, "the best thing I could have done".
"She instantly came up with solutions and ideas, and together we realised that a waterproof silicon wristband would be a great idea."
Andrea put Catherine in touch with a supplier who was able to produce high quality wristbands with the writing etched and ink filled, to ensure it wouldn't wear off.
"The lovely team at bcreative have been fantastic as well, helping us design the posters for advertising at no cost."
Andrea has offered to stock the wristbands at the swimming pool, and will talk to other pools in the area about also stocking them. The wristbands can also be ordered from Catherine directly by emailing her: hearwithcare@outlook.co.nz, phoning or texting her on 021 818 396 or through Facebook: www.facebook.
com/HearWithCare.
As for the inspiration behind this new business, Joshua, he loves the fact he no longer has to try to explain to people that he can't hear, and has identified other times that the wristband will help him.
"He was in a fast food place the other day and wanted to order an ice-cream, but the background noise was making it hard for him to be understood.
"Afterwards he said he should have had his wristband on as then they would have understood why."