Category: Environmental indicators
Risk type: Water pollution
Indicator: Untreated Connected Wastewater
Provider: WRI

Untreated connected wastewater measures the percentage of domestic wastewater that is connected through a sewerage system and not treated to at least a primary treatment level. Wastewater discharge without adequate treatment could expose water bodies, the general public, and ecosystems to pollutants such as pathogens and nutrients. The indicator compounds two crucial elements of wastewater management: connection and treatment. Low connection rates reflect households’ lack of access to public sewerage systems; the absence of at least primary treatment reflects a country’s lack of capacity (infrastructure, institutional knowledge) to treat wastewater. Together these factors can indicate the level of a country’s current capacity to manage its domestic wastewater through two main pathways: extremely low connection rates (below 1 percent), and high connection rates with little treatment. Higher values indicate higher percentages of point source wastewater discharged without treatment.

  • Source/link:
  • Unit:
    %
  • Data type:
    Statistics
  • Geographical scope:
    World
  • Frequency of data aggregation:
    Annual
  • Time coverage (from year):
    2019
  • Time coverage (to year):
    2019
  • Available for download in xls/csv:
    NO
  • Can be disclosed in other formats:
    NO
  • Interactive map/graph available:
    YES