3+ Electronic Document System in Kocaeli Water and Sewerage Administration General Directorate! 3+ EDM Document Management System has ensured systematic electronic storage and management of all documents of different types and categories used by various users in the institution through automation throughout their entire life cycle, in accordance with TSE and ISO standards. It has briefly ensured that all documents used in ISU (Kocaeli Water and Sewerage Administration General Directorate) are published, shared, kept, revised, updated and archived.