6.D.8 Number of household independent wastewater treatment systems
Sustainable Development Goal
Goal 6. Clean water and sanitation
Priority
Development of water and sewage infrastructure
Definition
Number of household wastewater treatment systems.
Unit
-
Available dimensions
total
Methodological explanations
Household independent wastewater treatment systems is a complex of devices intended for treatment of sewage produced in one or more households.
As a result of an anaerobic and aerobic decomposition occurring in that system, the larger part of sewage is converted into the form of water of second class quality that can be safely discharged into the ground or nearby surface waters (rivers, streams, ditches, ponds, lakes). A household sewage treatment plant consists of a primary settling tank and a final treatment system. Depending on the type of the final treatment system there are household sewage treatment plants with: - dispersing drainage, - sand filter, - plant bed (soil-plant filters, hydroponic beds), - biofilter (container treatment plant), - activated sludge (container treatment plant).
Data on the number of household independent wastewater treatment systems as of 31 December.
