I live on the Gold Coast and use a RO system for drinking water and sediment/carbon pre filters for the water to our fridge, which also has a carbon filter. The difference between it and the tap water is noticeable. Every member of my family and friends who visit, notices the difference, and prefer the filtered water.
You will come across people who swear that there is nothing wrong with tap water, and then try to talk up "notes" etc in their coffee, wine and whatever. Personally I tend to ignore the comments from these people.
SE QLD has very good tap water, especially when you compare it to Adelaide. The chlorine is noticeable and also varies. Do you know what is put into the water? Can you trust our govt? I am sceptical, and prefer to have control over the water I drink.
If you want honest information, then contact this company. They know what they are talking about and do not have hidden agendas. Their prices are very good and so is their service. The website is easy to navigate.https://www.filtersystemsaustralia.com.au/