The Environmental Protection Agency of Tasmania has released new directives for the disposal of sewage from vessels in Tasmania waters. The Directive is a risk-based approach to sewage discharge which specifies where sewage may and may not be discharged from certain vessels into Tasmanian waters.
You can read the Directive on The Discharge of Sewage from Certain Vessels into State Waters HERE (pdf)
The EPA Website also has useful information for boat owners or visitors to Tasmania