Whatever it is about Adelaide, I'm sure it has something to do with the water. A feature article in Adelaide Now describes a tour of the facilities at Centennial Park that show folks what happens after the service:

Adelaide Now
At Centennial Park cemetery, some even accompany their loved ones to the crematorium, and then go outside and wave in the direction of the chimneys as the soul drifts (they hope) towards Nirvana. Sikhs, similarly, with their belief in reincarnation, ...

Read more:  Adelaide Now