Agreement on the Protection of Lake Constance against Pollution Document type Multilateral Field of application Regional/restricted Date Oct 27, 1960 Source IUCN (ID: TRE-000464) Title (French) Accord sur la protection du lac de Constance contre la pollution Title (Other) Übereinkommen über den Schutz des Bodensees gegen Verunreinigung Place of adoption Steckborn Depository Germany Language German Entry into force Nov 10, 1961 Subject Water Full text Other Website www.igkb.de www.admin.ch Country/Territory/Participant See Expanded View Show Map Countries Entry into force Ratification * Austria Nov 10, 1961 Oct 27, 1960 [1] Baden-Württemberg Nov 10, 1961 Oct 27, 1960 [1] Bayern Nov 10, 1961 Oct 27, 1960 [1] Switzerland Nov 10, 1961 Oct 27, 1960 [1] * [1] Ratification [2] Accession/approbation [3] Acceptance/approval [4] Succession [5] Consent to be bound [6] Definite signature reset zoom out zoom in