Access to this campground is available to those that have walked in from the DOC tracks that link to this area, or via boat. You're not allowed to use the privately owned road that provides access from Kawerau.
There are a number of commercial operators that run either boat or helicopter transport around the Rotorua Lakes area, with options for connecting trails or getting to/from campsites.
Find commercial operators for Lake Tarawera Scenic Reserve.