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Classification of hazardous waste

HazWasteOnline™ is web-based software for classifying hazardous waste. The software follows the latest Environment Agency guidance and European regulations and lets the user focus on what is in the waste and not how to do the calculations or keep up with the changing data.

HazWasteOnline™ provides waste producers, consultants, carriers and waste receivers with a simple, accurate and auditable tool for the classification of potentially hazardous and hazardous waste materials such as contaminated soils, filter cakes, sludge residues and wastes from organic processes.

HazWasteOnline: Example of a classification report for a hazardous soil

Click here to download an example of a classification report for a contaminated soil.

Click here to check out the main features.


Although the waste producer has the legal responsibility to classify any waste they produce, most classifications in the UK are done by the waste receivers.

  • Incorrect classification can drastically increase disposal/transportion costs,
  • It can potentially breach legislation, and
  • Having a transparent and defensible audit trail reduces a company's risks.

While the cost for non-hazardous waste disposal in landfill may be between £25 and £100/tonne (including Landfill Tax), the cost for hazardous waste disposal can be many hundreds of pounds/tonne higher. This isn't just due to 1) the charge for the waste disposal itself but also to 2) landfill tax of £80/tonne and 3) the relatively small number of hazardous landfills left in the UK (hence transportation costs can become very significant).

HazWasteOnline™ contains all 20 EWC chapters and all 4500 plus substances from Table 3 of Annex VI of Regulation 1272/2008 on the Classification, labelling and packaging of substances and mixtures (CLP). The Professional Edition lets the user define other waste stream and substance lists such as ones for a filter cake, a sludge or site X. It lets you analyse tens or hundreds of samples at a time and includes a function to cut-n-paste data from laboratory spreadsheets.

Hazardous Waste Classification tool

HazWasteOnline™ is an on-line web tool that allows subscribers to:

  • Utilise a default waste stream template suitable for contaminated soils
  • Create customised waste stream templates with different substances, default species and EWC chapter
  • Add their own substances
  • Use the cut-n-paste function to quickly transfer laboratory results from spreadsheets
  • Classify one, ten or hundreds of samples at a time
  • Re-run the classification based on new information or assumptions
  • See which substances are causing the hazardous classification
  • Ignore a hazard property or substance (but document why)
  • Detailed PDF classification reports

HazWasteOnline™ allows users to code and classify waste as defined in the EWC (European Waste Catalogue 2002) based on EC Regulation 1272/2008 on the Classification, labelling and packaging of substances and mixtures (CLP) and latest Environment Agency guidance (WM3). The system comprises an analysis and reporting web front-end, a calculation engine to model the regulations and a database to save the contaminants inputted and reports generated. The system is fully auditable and is maintained by us to reflect the latest changes in EC regulations and Environment Agency guidance.


Watch our training videos to learn how to use HazWasteOnline™ to classify your waste streams.


17th - 18th September 2019   Warrington, GB

8th - 9th October 2019   Dublin, Ireland

6th - 7th November 2019   Reading, UK

Click here for more details and the Booking Form

Day 1: Hazardous Waste Classification

Day 1 covers the waste regulations, Agency guidance, waste classification using the chemical analysis of the waste including practical exercises and the use of the HazWasteOnlinetm software. The course explains hazard statements, metal species, the WM3 approach to classification. It will explain the changes to ecotoxic that will come into force in July 2018. It also discusses where WAC, Inert, sampling methodology and the CL:AIRE code of practice fit into the waste classification process.

Day 2: Advanced Waste Classification    

Day 2 covers basic chemistry, physical properties, choice of both appropriate substances and species for metals, use of the C&L Inventory database and IARC Monographs for researching substances that are not in the CLP; it covers cases where some hazard properties can be excluded from a classification, recognising and dealing with incomplete CLP entries, the forensic assessment of hydrocarbons and PAH's, choice and meaning of different lab test suites and includes five practical exercises.

Attendees include waste producers, waste management companies, regulators and consultants.


21st August 2017 - .hwol electronic data delivery file

We have released the new .hwol file format for the rapid importation of lab data. The new format is currently available from the following laboratories:

  • ALS
  • Chemtest
  • Exova Jones

It allows you to rapidly import your laboratory data straight into HazWasetOnline™ - it's quick and easy to use. Please contact support@onetouchdata.com if you want to know more or try the new format.

20th June 2017 - A new (experimental) WM3 HP14 engine released

Recently published Regulation (EU) 2017/997 defines a Europe-wide approach to the assessment of HP14 Ecotoxic using the H400 hazard statement codes. This change will come into force on the 5th July 2018. To help assess the potential impact of this change, we have published an experimental WM3 classification engine to help our customers assess the impacts of this change.

1st June 2017 - ATP 10 published

ATP10 updates 13 substances and adds 24 new ones.

24 October 2016 - New report format, Wiki and ATP 9 published

Revised waste classification report to better present laboratory data and associated meta data including reason for selection of metal species. We have also added a Wiki to provide information on the selection of metal species and many other issues such as high pH in made ground. The substance data from ATP 9 also published

22 June 2016 - German language and a German waste classification engine added

We have added both the German language and a German waste classification engine "Vollzugshinweise Brandenburg (Erlass Nr. 5/1/15)" to HazWasteOnlineTM.

25 May 2015 - WM3 classification engine published

Following the publication of the Technical Guidance WM3 last week, we are pleased to release our new WM3 classification engine for use by our customers.

1 December 2014 - Italian language interface and classification engine published for Italian customers.

Both the user interface and reports can now be rendered and published in the Italian language. This complements a new Italian classification engine that follows the ARPA Venice guidance document PG11DT for waste classification.

26 November 2014 - Data from Table 3.1 added to the database (Hazard Statement codes)