The 4 C’s are a simple spill-response framework used in safety training across Australia:
1. Control
Stop the source of the spill if it is safe to do so — turn off valves, upright containers, or isolate leaking equipment.
2. Contain
Use socks, booms, or barriers to prevent the spill from spreading, especially towards drains or sensitive areas.
3. Clean Up
Absorb and remove the spill using the appropriate materials for the liquid type (general purpose, oil, chemical).
4. Communicate
Report the spill to supervisors, WHS officers, or environmental authorities depending on severity.
These 4 C’s help ensure a structured, safe, and compliant approach to spill response.