Septic tanks, package treatment plants and cesspools

Find our guidance on septic tanks, package treatment plants and cesspools in:

England on Business Link: Drainage system requirements to avoid pollution

Northern Ireland on NIBusinessInfo: Drainage system requirements to avoid pollution

Scotland on Business Gateway: Drainage system requirements to avoid pollution

Wales on Business.Wales.gov.uk: Drainage system requirements to avoid pollution

Our guidance has moved to these websites as part of the government programme to centralise online guidance for businesses. Read more about the changes to NetRegs.