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Identifier	T2
Short name	Secondary treatment
Dataset	H2020: Municipal wastewater
Table	MWW National
Reference URL	http://dd.eionet.europa.eu/datasets/latest/Wastewater/tables/Country_WW/elements/T2
Name	Municipal wastewater subject to secondary treatment
Definition	Municipal wastewater subject to secondary treatment per year. "Secondary treatment" refers to the removal of dissolved and suspended biological matter. Secondary treatment is typically performed by indigenous, water-borne micro-organisms in a managed habitat. Secondary treatment may require a separation process to remove the micro-organisms from the treated water prior to discharge or tertiary treatment. According to the Urban Waste Water Directive (91/271/EEC), secondary treatment refers to the treatment of urban waste water by a process generally involving biological treatment with a secondary settlement or other process in which the requirements established in Annex I of the Directive are respected.
Methodology for obtaining data	Volume of municipal wastewater treated by secondary treatment expressed as a fraction of volume of treated municipal wastewater per year.
Datatype	decimal
Maximum size	5
Decimal precision	2
Unit	% v/v
Minimum inclusive value	0.00
Maximum inclusive value	100.00
Public or Internal	Public attribute
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