Skip to main content

Administrator of the NTMB-system

Copyright - Lien Van Besien


In September 2020, COPRO took over the administration of the NTMB* management system from the Flemish Department of the Environment (DOMG). With this takeover, COPRO wants to promote natural techniques for infrastructure works.

As administrator, COPRO is therefore also the depositary of all agreements and procedures associated with the NTMB certificate.

(*) NTMB : Dutch abbreviation for natuurtechnische milieubouw, in English, ecological and technical-natural construction


The administrator of the NTMB management system is responsible for drawing up the requirements and certification regulations of the NTMB managing system. The administrator does not exercise any authority or responsibility of any kind whatsoever with regard to the granting of these certificates.

In order to enable the quality requirements of the NTMB management system to evolve, it is essential to gather as much experience and knowledge as possible, to bundle this and to disseminate consistent information. To this end, the administrator convenes an Advisory Board. Crucial within this board is the consultation between the various parties involved: producers and suppliers, contractors and placement experts, engineering offices and research bodies, public institutions, accredited certification bodies and experts. The various interest groups are thus represented in a balanced way in this advisory board.

The Advisory Board gives its opinion on the nature and content of the certification scheme (cf. the requirements and certification regulations), but cannot intervene in the evaluation or in the decision to grant the certificate for individual dossiers.

The administrator convenes the Advisory Board at least once a year.

The administrator asks BELAC (Belgian accreditation body of the Federal Public Service Economy) to monitor the certification bodies and to ensure that all certification bodies treat the dossiers in a uniform manner. A certification body that wishes to handle dossiers relating to the NTMB management system applies to BELAC for accreditation. BELAC evaluates the dossier, carries out audits and takes a decision on the granting of the accreditation certificate to the certification body concerned.

After obtaining its accreditation, the certification body reports to the administrator that it wishes to process files under the NTMB management system. After being designated by the administrator, the certification body may handle the dossiers.

The certification body evaluates the applications for certification of producers/suppliers, carries out audits and decides on the granting of the NTMB certificate in accordance with the certification regulations of the NTMB management system in force. The certification body also deals with complaints about a producer certified for the NTMB management system and - if necessary - takes appropriate measures. These measures range from a warning, to suspension or even withdrawal of the certificate, depending on the seriousness of the facts.

producer or supplier wishing to obtain the NTMB certificate for his organisation must contact a certification body.


NTMB Zorgsysteem


Click here for more information about the procedure

  • Which are the certification bodies?
  • The requirements of the NTMB management system
  • Certification regulations
  • Standard forms
  • Companies with a certified NTMB management system

For more information, please contact Karl Fonteyne -