NPI – What is it?

The National Pollutant Inventory (NPI) is the most comprehensive database of national information on pollutant emissions. It contains data on 93 substances that have been identified as important due to their possible effect on human health and the environment. Companies have to determine if any of their facilities have to report to the NPI based on guidelines published by the NPI.

Do you need to report?

Find out if your company needs to report to the NPI by filling out our online NPI questionnaire.


Key dates

  • 31 March – the Australian Government publicly releases NPI facility data for the preceding year
  • 1 July – the NPI reporting period commences on 1 July for each year for most reporters
  • 30 September – reporting facilities provide information on the previous reporting period to the state or territory environment agency in its jurisdiction
  • 30 November – state and territory environment agencies review all NPI reports for accuracy and forward the data to the Australian Government.


What do I need to do?

The steps involved in NPI reporting include:

  • Determine whether your facility is excluded from reporting to the NPI
  • Determine whether your facility needs to report to the NPI
  • Estimate your facilities emissions
  • Estimate your facilities transfers
  • Report your facilities emissions and transfers

What can we do for you?

Katestone specialists can manage all aspects of NPI reporting for clients including:

  • Collation of facility data
  • Data management and processing
  • Emission estimation
  • Reporting
  • Preparation of data for online submission to the NPI website

Katestone can take the hassle and complexity out of NPI reporting for your company.

Ask us an obligation-free question using the form below.

Get in touch for assistance with your emissions reporting obligations.