Indicator 6.3.1 - Proportion of wastewater safely treated
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Global Metadata
This table provides information on metadata for SDG indicators as defined by the United Nations Statistical Commission. Complete global metadata documentation on all indicators in Goal 6, unless otherwise noted, is provided by the UN Statistics Division.
| SDG Indicator Name | Proportion of wastewater safely treated |
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| SDG Target Addressed | By 2030, improve water quality by reducing pollution, eliminating dumping and minimizing release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally. |
| Definition of SDG Indicator | Proportion of wastewater generated both by households (sewage and faecal sludge), as well as economic activities (based on ISIC categories) safely treated compared to total wastewater generated both through households and economic activities. While the definition conceptually includes wastewater generated from all economic activities, monitoring will focus on wastewater generated from hazardous industries (as defined by relevant ISIC categories). |
| UN Designated Tier | 2 |
| UN Custodial Agency | WHO, UN HABITAT, UNSD (Partnering Agencies: UNEP, OECD, Eurostat) |
U.S. Metadata
This table provides metadata for the actual indicator available from U.S. statistics closest to the corresponding global SDG indicator. Please note that even when the global SDG indicator is fully available from U.S. statistics, this table should be consulted for information on national methodology and other US-specific metadata information
| Method of computation for global SDG indicator | The wastewater safely treated is calculated by combining the percentage of household (sewage and faecal sludge) wastewater and the percentage of wastewater from hazardous industries treated. Household surveys and censuses provide information on use of types of basic sanitation facilities. These estimates are combined with safety factors for on-site disposal and for transportation to designated places for safe disposal or treatment, as described in indicator 6.2.1. The information generated for indicator 6.2.1 will be combined with safety factors describing the proportion of wastewater from hazardous industries which is safely treated before disposal or reuse to produce indicator 6.3.1. Calculation of safety factors for household wastewater (sewage and faecal sludge) treatment will be coordinated with estimation of similar safety factors for safe management of sanitation required for indicator 6.2.1. The accompanying Statistical Note describes in more detail how 'safety factors' for wastewater treatment, disposal and reuse will be generated through a national assessment process, and combined with data on use of different types of sanitation facilities, as recorded in the current JMP database. Statistical methods for measurement of the wastewater treatment (called "wastewater to sewerage"by SEEA-Water) align with the SEEA definitions and treatment categories (primary, secondary, tertiary). Statistical methods for the treatment of industrial wastewater align with the SEEA definitions and treatment categories using ISIC classifications and treated volumes from permits data. |
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