• Data reference period
• Geographic localization (NUTS - 2002)

• 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).
• SEPARATE COLLECTION OF WASTE:  The special collection of waste duly separated to be recycled (e.g. special collection containers).
• URBAN SOLID WASTEMANAGEMENT:  Comprises the collection, transport, treatment, recovery and disposal of waste, including self-monitoring of these operations and the safety of disposal sites after being closed. Urban solid waste management systems covers the following operations: collection, selective collection, transport, recovery and/or disposal of waste.
• AVERAGE POPULATION:  The average population during a calendar year, generally calculated as the arithmetic mean of the population on two consecutive years.

Urban waste selectively collected/ Annual average resident population