Metainformaçao

AVERAGE POPULATION: &nbsp; The average population during a calendar year, generally calculated as the arithmetic mean of the population on two consecutive years.
REFERENCE PERIOD: &nbsp; Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).
TREATED WASTEWATER: &nbsp; Wastewater after treatment of which is carried out in wastewater treatment plants (Portuguese acronym: ETAR) or in municipal septic tanks.

Metadata

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Population served by wastewater treatment plants (Series 2001-2005 - %)

Characteristic	Description
Name	Population served by wastewater treatment plants (Series 2001-2005 - %) by Geographic localization (NUTS - 2002); Annual
Regularity	Annual
Source	Statistics Portugal, Environmental survey - Water and wastewater structure caracterization
First available period	2001
Last available period	2005
Dimensions	Data reference period Geographic localization (NUTS - 2002)
Concepts	AVERAGE POPULATION: The average population during a calendar year, generally calculated as the arithmetic mean of the population on two consecutive years. REFERENCE PERIOD: Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others). TREATED WASTEWATER: Wastewater after treatment of which is carried out in wastewater treatment plants (Portuguese acronym: ETAR) or in municipal septic tanks.
Formule	(Population connected to wastewater treatment plants/ Annual average resident population)*100
Measure unit (symbol)	Percentage (%)
Power of 10	0
Observations
Last update date	14/07/2008