Registered noise levels

Time series: Ecology_5.1_en.xls
INSTITUTIONAL SURVEYS - Registrered noise levels
Contact organisation

National statistical institute

Contact organisation unit

Environmental and Energy Accounts Department

Contact name

Marieta Petrova

Contact person function

Chief expert

Contact mail address

2 Panayot Volov St., 1038 Sofia

Contact email address

[email protected]

Contact phone number

+359 2 9857 504

Contact fax number
Metadata update
Metadata last certified20 December 2018
Metadata last posted20 December 2018
Metadata last update20 December 2018
Statistical presentation
Data description

Annual data about the number of points of noise registration and measured noise levels in decibels.

Classification system
Sector coverage

Exhaustive survey which covers all points of noise registration in the country.

Statistical concepts and definitions
Statistical unit
Statistical population
Reference area

Total for the country.

Time coverage

1980 - 2017

Base period

Not applicable.

Unit of measure

Number; Decibels.

Reference period


Institutional mandate
Legal acts and other agreements

National system for monitoring noise in the environment.

Data sharing
Confidentiality - policy

· Law on Statistics;

· Regulation (EC) No 223/2009 on European statistics (recital 24 and Article 20(4)) of 11 March 2009 (OJ L 87, p. 164), stipulates the need to establish common principles and guidelines ensuring the confidentiality of data used for the production of European statistics and the access to those confidential data with due account for technical developments and the requirements of users in a democratic society.

Confidentiality - data treatment

Individual data are not published in accordance with article 25 of the Law on Statistics. The publishing of individual data can be performed only in accordance with article 26 of the same law.

Release policy
Release calendar

The date of release of statistical information is indicated in the Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute.

Release calendar access

The calendar is available on the NSI website:

User access

Data on Registrered noise levels is published on the NSI website, section Environment in accordance with the Law on Statistics and the European Statistics Code of Practice respecting the professional independence and aimed at objectivity, transparency and equal treatment of all consumers.

Frequency of dissemination


Accessibility and clarity
News release



· Environment;

· Statistical Reference Book;

· Statistical Yearbook.

On-line database

Data on Registrered noise levels are available to all users of the NSI website under the heading Environment:

Micro-data access

Not available.


Information service on request, according to the Rules for the dissemination of statistical products and services in NSI.

Documentation on methodology

Statistical questionnaire for registered noise levels.

Quality documentation

Not available.

Quality management
Quality assurance
Quality assessment
User needs
User satisfaction
Accuracy and reliability
Overall accuracy
Sampling error
Non-sampling error
Timeliness and punctuality
Coherence and comparability
Comparability - geographical
Comparability - over time
Coherence - cross domain
Coherence - internal
Cost and burden
Data revision
Data revision - policy
Data revision - practice
Statistical processing
Source data

National Center of Public Health and Analysis.

Frequency of data collection


Data collection

Electronic questionnaire of the National Center of Public Health and Analysis.

Data validation
Data compilation
Download in SDMX 2.1 file format: INSTITUTIONAL SURVEYS - Registrered noise levels
Metadata Structure Definition in SDMX 2.1: ESMS_MSD+BNSI+2.0+SDMX.2.1.xml
Download in SDMX 2.0 file format: INSTITUTIONAL SURVEYS - Registrered noise levels
Metadata Structure Definition in SDMX 2.0: ESMS_MSD+BNSI+2.0+SDMX.2.0.xml
  • Environment 2007
    Environment 2007
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    The information is systematized in the following sections:
    • Emissions in the air;
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    The National Statistical Institute has the pleasure to submit to the attention of national and foreign users of statistical information the 76th edition of the Statistical Yearbook of the Republic of Bulgaria 2008. It provides topical statistical information on the demographic, economic and social development of the country for the 2002 - 2007 period in different territorial and classification aggregations and breakdowns.
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    Statistical Reference Book of the Republic of Bulgaria 2008
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