• At the international level a number of international treaties and declarations have emerged and have been signed among different countries and regions concerning environmental management. There declarations and treaties are indeed important as they oblige national governments to complied with international regulations/ standards that are internationally accepted.

• Pollution does not respect political boundaries, making international law an important aspect of environmental law. Numerous legally binding international agreements now encompass a wide variety of issue‐areas, from terrestrial, marine and atmospheric pollution through to wildlife and biodiversity protection.

• While the bodies that proposed, argued, agreed upon and ultimately adopted existing international agreements vary according to each agreement, certain conferences, including 1972's United Nations legislative and executive international regulations Conference on the Human Environment, 1983's World Commission on Environment and Development, 1992's United Nations Conference on Environment and Development and  2002's  World  Summit on Sustainable Development have been particularly important.

• In order to avoid these kind of challenges on international level the EU drafted the European Framework Directive which is now binding for all European Countries and which is adopted from other regions in the world:

    http://ec.europa.eu/environment/water/water‐framework/