Trade effluent is the liquid waste from a business or industrial process that passes to public sewer.
The liquid waste from various industries and processes is classed as trade effluent and includes liquid waste from car washes, laundrettes, metal finishing, textiles through to large chemical works, food and beverage manufacture etc.
Control of trade effluents applies to companies of all sizes and consents may be required for discharges of only a few litres per day and also to discharges that are made infrequently.
The definition of a trade effluent does not include toilets, sinks, personal cooking, and uncontaminated surface water drainage.
Wastewater discharges from hotels, pubs, restaurants, takeaways and caravan parks are not currently classed as trade effluent. However premises found to be discharging materials such as fats, oils, greases and food waste to sewer that cause blockages or affect the operation of water company assets, can be controlled under another part of the Water Industry Act.