Good question! It's great to know that you're interested in finding out if indoor pools are open in New South Wales. The answer to this question is "it depends".
The Covid-19 pandemic is affecting the availability and operations of indoor pools across Australia, including those in New South Wales. Most local councils in NSW are adjusting the reopening of indoor pools to the current circumstances and may require swimmers to adhere to certain safety protocols, such as social distancing.
For example, in the City of Sydney, indoor swimming pools have been reopened to the public, but with significantly reduced lane access. Swimmers are now required to book a session and are limited to 60 minutes per session. You can find more information on the City of Sydney's website here: http://www.cityofsydney.nsw.gov.au/leisure-and-culture/leisure-and-wellbeing/swimming-pools
In other areas of NSW, such as Wollongong City Council, their website states that the majority of Council operated swimming pools, including indoor pools, have reopened as of late May 2020. For further information, take a look at the Wollongong City Council website here: https://www.wollongong.nsw.gov.au/services/facilities/public-swimming-pools
In conclusion, indoor pools in New South Wales are open, but regulations and restrictions may differ from region to region. It's important to double check re-opening dates, safety protocols, and bookings on the websites of each local council beforehand.