Skip to content

Australian waste code finder

C100 waste code WA Caustic solutions & lye as solid flakes or pellets.

  • Free, no account
  • WA Controlled Waste Regulations and DWER category guidance
  • Nothing is stored

Find an Australian waste code

C100, Alkaline liquids and solid alkalis.

  • Western Australia

    Alkaline liquids and solid alkalis

Western Australia C100: the material may be an alkaline liquid or an alkali in solid form.

Alkaline solutions and bases in solid form, such as caustic soda. Covers both liquid and solid alkalis.

Is WA C100 hazardous waste?

Not from the code alone. C100 is a WA controlled-waste category. Regulation 3 takes in industrial, commercial, medical, laboratory and sewage-treatment waste and leaves out domestic waste. It also excludes waste that a Class I, II or III landfill can lawfully accept, with set exceptions that include asbestos, tyres and clinical waste.

Where WA road tracking applies, enter C100 in the controlled-waste category field on the DWER tracking form. DWER issues the number. The authorised carrier or driver records collection and transport, and the receiving facility closes the record. Record the holder, amount, containment and destination. The WA load thresholds and exclusions still apply.

What does WA C100 cover?

Alkaline solutions and bases or alkalis in solid form. The shared entry sets no universal pH limit. Victoria has a separate C100 pair with its own threshold and examples.

Source edition
May 2018

Is alkaline waste WA C100 or B100?

CodeWhen it fits
C100The waste is an alkaline solution or an alkali in solid form.
B100The waste is acidic or a solid acid rather than alkaline.

Landfill acceptance follows the acceptance criteria, not how the waste looks. A category number and a dangerous goods classification answer different questions.

Which wastes take WA C100?

WasteWhen it’s C100
Alkaline wasteThe material is an alkaline liquid or an alkali in solid form.

Which codes sit beside WA C100?

CodeWhat it is
A100Metal and plastic surface-treatment waste
A110Cyanide heat-treatment waste
A130Inorganic cyanides
D100Metal carbonyl compounds
D110Inorganic fluorine compounds
D120Mercury and mercury compounds
D130Arsenic and arsenic compounds
D140Chromium compounds