Rhagor o wybodaeth am lygredd dŵr

Find our guidance on water pollution in:

England on Business Link: Preventing water pollution

Northern Ireland on NIBusinessInfo: Preventing water pollution

Scotland on Business Gateway: Preventing water pollution

Wales on Business.Wales.gov.uk: Preventing water 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.