Last edited 26 Feb 2021


The word ‘effluent’ refers to liquid waste or sewage.

Event effluent is: 'The combination of inventory and any firefighting water and/or foam and rainwater arising from an event.'

Trade effluent is: ‘Any liquid waste, other than surface water and domestic sewage that is discharged from premises being used for business, trade or industry.’

Ref Containment systems for the prevention of pollution, Secondary, tertiary and other measures for industrial and commercial premises (CIRIA C736), published by CIRIA in 2014.

For mor information see:

Designing Buildings Anywhere

Get the Firefox add-on to access 20,000 definitions direct from any website

Find out more Accept cookies and
don't show me this again