EntityQ775865· pop 43· linked from 337 articlesBasel ConventionSign in to saveinternational treaty to prevent transfer of hazardous waste from developed to less developed countriesKey factsTypeUnited Nations treatySigned22 March 1989 ( 1989-03-22 )LocationBasel , SwitzerlandEffective5 May 1992ConditionNinety days after the ratification by at least 20 signatory statesDepositarySecretary-General of the United NationsLanguagesArabic, Chinese, English, French, Russian, Spanishvia Wikipedia infoboxArticleEnvironment portalEcology portalRead full article (60 paragraphs)ConnectionspollutionEntitydeveloped countryEntityCategories1992 in the environmentChemical safetyEnvironmental treatiesFree-content attributionFree content from United Nations Environment ProgrammeHazardous wastePollutionTreaties concluded in 1989Treaties entered into force in 1992Waste treaties