National Pollutant Inventory or NPI is an Australian pollution database of emissions managed by the Australian Government on behalf of the Australian States and Territories. The NPI was created based on the UK model and was agreed to by the Keating labor government in order that a piece of legislation pass through the senate.
It is internet based and is free for users.
The NPI records the emissions from industrial facilities and diffuse sources of 90 different chemical substances to air, land and water.
The objectives of the NPI are to:
Australian industrial facilities that use certain amounts of the 90 NPI substances must estimate and report their emissions directly to their state or territory environment agency annually. The state and territory environment agencies review all NPI reports for accuracy and forward the data to the Australian Government. The reports are then displayed on the NPI public website