EN14654-3:2021isaEuropeanstandardthatprovidesguidelinesforthemanagementandcontrolofactivitiesrelatedtobuildingexternaldrainageandsewersystems,specificallyfocusingondrainageandsewercleaning.Itoutlinesprocedures,bestpractices,andrequirementstoensuretheeffectiveandsafemaintenance,inspection,andcleaningofthesesystems.Thestandardaimstopreventblockages,reduceenvironmentalimpact,andensurethelongevityandproperfunctioningofdrainageandsewerinfrastructure.Compliancewiththisstandardhelpsorganizationsmaintainhygiene,safety,andoperationalefficiencyinmanagingwastewaterandstormwatersystems.