Article 13 of the Convention on the Protection and use of Transboundary Watercourses and International Lakes requires parties to to exchange reasonably available data on: (a) Environmental conditions of transboundary waters; (b) Experience gained in the application and operation of best available technology and results of research and development; (c) Emission and monitoring data; (d) Measures taken and planned to be taken to prevent, control and reduce transboundary impact; (e) Permits or regulations for waste-water discharges issued by the competent authority or appropriate body.