Discharge Consent Levels
The Environmental Agency issues a set of Discharge Consent Levels to regulate the effluent that is discharged into sewers and watercourses. These regulations are reviewed, and usually tightened, periodically.
A consent to discharge trade effluent will specify limits on the following:
• maximum volume and flow rate
• temperature, pH and other chemical parameters, such as COD (Chemical Oxygen Demand)
• details of Total Suspended Solids (TSS) in the effluent.
Compliance and charges
Your local sewerage handler monitors your discharge compliance, and bills you according to the volume of your trade effluent and concentration of contaminants. To minimise this cost, and to comply to Discharge Content Levels, you may find it necessary to install or upgrade your on-site effluent treatment facilities.