Information on cookies for BKK websites


Information on cookies for BKK websites


A cookie is a set of letters and numbers that websites usually send to your browser to save certain settings, make the website easier to use and help us collect some relevant, statistical information about visitors. Cookies often contain a unique identifier - a secret, randomly generated sequence of numbers - that is stored on your device. Some cookie is deleted after you close the website, some cookie is stored on your computer for a longer period of time.

You can prevent all activity related to cookies, delete data files placed during your previous visits, the exact way to do this is explained in your browser's instructions, which can be found on the following pages.

You can find out about cookie settings for the most popular browsers at the following links:





Mac OS X








On the basis of Article 45 of the GDPR and the European Commission's adequacy decision on the EU-US Data Protection Framework, which entered into force on 10 July 2023, the BKK informs the data subjects that by activating the Google Analytics and the Facebook Pixel cookies, the data subjects consent to the transfer of their personal data to the United States of America. The Google LLC and the Meta Platforms, Inc. is an active participant in the list of the Data Privacy Framework.


Google cookies


When you download certain parts of this website, the visit analysis software we use (Google Analytics, operated by Google Inc. ("Google")) automatically places small data files on your computer, which in some cases may contain your personal data. You will also be notified of this when you first visit the site, in accordance with current legislation, and according to the Art. 155 (4) of the Act C of 2003 on Electronic Communications, we will ask for your consent to do so. The data files are necessary for the operation of certain functions of the website, and information obtained from previous data files during your visits will be transferred to BKK. The exact names of these data files (_ga, _gat, _gid) and their functions are described on this page. Google Analytics stores the IP address received via the browser. The data will be kept for 26 months, which period will be reset if a new event occurs in relation to the user (e.g. s/he starts a new session).

IP anonymisation is active on this website, so that in the member states of the European Union or contracting states of the European Economic Area, Google will render the IP address non-identifiable before transmission. The IP address transmitted by the browser via Google Analytics is not linked to any other data from Google.

Google Analytics uses an anonymous identifier to provide BKK with data: number of visits, duration, pages visited, device information from which the visit was made (mobile, desktop, tablet, display size, operating system type and version), geographical location of the visit at the level of the municipality, frequency of the visit (percentage of return visits or new visits, demographic data (source of which is the Google account, Android and iOS devices). The Google Analytics cookie data automatically recorded by the server are available to us for 60 days, after which they are only kept in aggregate form as visitor statistics.

Google also uses cookies ("DSID", "IDE", "NID") that are used to link a user's activities on different devices if they have previously logged into their Google Account on those devices. This is done in order to align the ads that are displayed to the user across devices and to measure conversion events.

Meta cookie


The "_fbp" cookie is used to identify browsers to provide advertising and website analytics services and has a lifetime of 90 days. The purpose of the Meta cookie is to measure content, ads and provide analytics.


The Facebook Pixel ( is a small piece of JavaScript added by the Facebook ads account administrator at the BKK to its own website in order to optimize ads, report conversions between devices, and create custom audiences of site visitors for use in Facebook ads. To use this product, the site does not need to collect or send names, email addresses, or other contact information to Facebook.


Meta does not share information from the website with any third parties. Meta uses data from websites where Pixels are placed to support the further development of advertisements.


The Facebook Pixel collects five types of data:


HTTP headers: anything that is included in HTTP headers. HTTP header is a standard web protocol that all browser requests and servers send to each other on the Internet. HTTP headers contain IP addresses, as well as information about the web browser, page location, document, redirect, and the person using the site.

Pixel-specific data: This includes the Pixel identifier and the cookie.

Button click data: This includes all buttons clicked by the site visitor, the labels on those buttons, and the pages visited as a result of the button click.

Optional values: Developers and advertisers can send additional data about the visit, as required, through custom data events. A custom data event can be related to, for example, conversion value or page type.

Form field names: This includes the names of fields on the website, such as 'email', 'address' and 'quantity'.


The data sent by the Facebook Pixel is used by Meta to enable BKK to use Meta's advertising products, to better reach the data subjects visiting BKK's website, to optimize BKK's ads, and to provide informative reports and analytics based on BKK's ads.


Data protection information concerning the cookies used is summarised in the tables below:


Cookies required for basic functionality

Cookies ensuring basic functionality contribute to the proper functioning of the website. Cookies containing the website settings are stored for a short period of time, while session cookies only during the current visit, and they are automatically deleted from your computer at the end of the session and when you close your browser. They are essential for navigating the website and for the proper functioning of the website. In no case do cookies for basic functionality collect any personal data about the data subject that could be used to identify the data subject.


Purpose of cookies

Storage period of cookies

Name of embedded cookies

Ensure the proper functioning of the website

until end of visitor session


Acceptance status of privacy policy

1 week


Stored for unsupported browsers

until end of visitor session


Stores the colour scheme of the accessibility portal

1 week


Stores the current status of login interfaces on the site

1 week after last login



Cookies for statistical and marketing purposes


Legal basis for data processing

Purpose of data processing

Names of embedded cookies and their storage period

Scope of personal data processed

Data subject's consent

Google Analytics collects information about how our visitors use our website

_ga 2 years

_gid 24 hours

_gat 1 minute

Please click  here to view the descriptions of the individual cookies

  • Google Analytics code
  • number of visits, duration
  • pages visited, device information from which the visit was made (mobile, desktop, tablet, display size, operating system type and version)
  • the geographical location of the visit at the level of the municipality
  • frequency of visits (proportion of return visits or new visits)
  • demographic data (sourced from Google account, Android and iOS devices)

Data subject's consent

Facebook Pixel provides advertising and site analytics services

_fbp 90 days

For more information click here.

  • HTTP headers (IP address)
  • Pixel specific data
  • Button click data
  • Form field names


Legal basis for data subject’s consent [Article 6(1)(a) of the GDPR]: consent may be withdrawn at any time. Withdrawal of consent does not affect the lawfulness of processing based on consent prior to its withdrawal.


The details of BKK's data processing and the rights of data subjects are set out in the privacy policy at


If you believe that BKK has processed your data unlawfully,  without prejudice to any administrative or judicial remedies, you are entitled to file a complaint with a supervisory authority, especially in the Member State of your usual residence or workplace or of the alleged infringement, in case in your opinion the processing of your personal data infringes the GDPR. This authority in Hungary is the National Authority for Data Protection and Freedom of Information (NAIH) (located at 1055 Budapest, Falk Miksa utca 9-11., postal address: 1363 Budapest, Pf. 9., e-mail: [email protected], phone: +36 1 391-1400, fax.: +36 (1) 391-1410, website:


You can also bring a civil action against BKK. The regional courts have jurisdiction to decide on the action. The action can be brought before the Metropolitan Court of Budapest, which is the court competent for the seat of BKK, or, at your choice, before the regional court of your place of residence.