Two statistics, total waste recycled and total waste generation, are needed in case to produce this indicator. For the former one, no data are currently being collected (data on need are as part of the treatment of municipal waste and hazardous waste with an overlap in between). While for the latter one, total waste generation, data are being collected through UNSD/UN Environment Questionnaire on Environmental Statistics. Some of the statistics collected by UNSD which can be used to produce the indicator are available on the UNSD website. The methodology has been developed but still under the need of further refinements, as on this document .