A full methodology for this indicator is available in the document entitled, “Global Chemicals and Waste Indicator Review Document” (UNEP, 2021).

For the purpose of this indicator, Hazardous waste generated should include collected hazardous waste (either by specialized companies or by municipal services), hazardous waste which is given by the generator directly to the treatment or disposal facility, as well as an estimation of the hazardous waste which is unaccounted for. Generated hazardous waste includes exported hazardous waste and excludes imports of hazardous waste.

$H a z a r d o u s w a s t e g e n e r a t e d$ = $h a z a r d o u s w a s t e c o l l e c t e d t h r o u g h m u n i c i p a l s e r v i c e s o r p r i v a t e c o m p a n i e s + h a z a r d o u s w a s t e g i v e n b y g e n e r a t o r t o t r e a t m e n t o r d i s p o s a l f a c i l i t i e s + e s t i m a t i o n o f h a z a r d o u s w a s t e u n a c c o u n t e d f o r$

The estimation of hazardous waste unaccounted for is the most difficult aspect of this methodology as it requires local-level knowledge and estimation. This aspect of the indicator is particularly important as hazardous waste that is unaccounted for is typically also untreated and has a high potential to impact the environment.

The proportion of hazardous waste treated is presented below. Note that the total quantity of hazardous waste treated during the reported year in the reporting country is calculated by adding quantities of hazardous waste treated, per type of treatment (recycling, incineration with/without energy recovery, landfilling or other), including exports and excluding imports. This matches with the definition of recycling in SDG indicator 12.5.1.

$P r o p o r t i o n o f h a z a r d o u s w a s t e t r e a t e d (%)$

$= \frac{\begin{matrix} Q u a n t i t y o f h a z a r d o u s w a s t e t r e a t e d \\ d u r i n g t h e r e p o r t i n g y e a r * \end{matrix} \times 100}{\begin{matrix} T o t a l q u a n t i t y o f h a z a r d o u s w a s t e g e n e r a t e d \\ d u r i n g t h e r e p o r t i n g y e a r \end{matrix}}$

* Hazardous waste treated in the country plus materials exported for treatment minus the materials imported for treatment.

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Rætta metadátur: 12.4.2