CESA (Consulting Engineers South Africa)

CESA aims to be the ‘Proud Voice of Consulting Engineering in South Africa’. CESA represents for its members, a body that promotes their joint interests and, because of its standing, provides quality assurance for clients. Over 500 firms employing just over 23 300 staff, who collectively earn a total fee income of almost R19 billion per annum, are members of CESA. CESA is committed to the principles of sustainability and the promotion of engineering excellence.



ECSA (Engineering Council of South Africa)

The Engineering Council of South Africa (ECSA) is a statutory body, that in pursuing its goals has an implied responsibility to ensure that the interests of the profession (the practitioners) are also promoted. The interest of the public and the country can only be served properly if a profession is healthy and strong. For this reason ECSA promotes the well-being of the voluntary societies which are active in engineering. Since the societies are the instruments through which the interests of the practitioners are served, a good balance between “public interests” (ECSA) and “own interests” (Societies) should be maintained.


IAIASA (International Association of lmpact Assessment South Africa)

In terms of the Environmental Conservation Act, 1989 (Act 73 of 1989), and the Environmental Impact Assessment Regulations, 2010 a Basic Assessment Report, Scoping Report or a comprehensive EIA must be conducted for new projects and the upgrading of existing projects. BTW & Associates has the experience to conduct these assessments according to the required procedures and legislation.



IMIESA (Institution of Municipal Engineering of Southern Africa)

The IMIESA’s Vision / Mission is to promote excellence in the engineering profession for the benefit of municipalities and their communities.
The Institute of Municipal Engineering of Southern Africa (IMESA) promotes the interests of municipal engineers and their profession, and creates a platform for the exchange of ideas and viewpoints on all aspects of municipal engineering with the aim of expanding the knowledge and best practices in all Local Government municipalities.



IWA (International Water Association)

IWA supports a series of strategic programmes which are designed to engage our members on subjects critical to the water sector’s wider development.
Thematic Programmes provide IWA with a mechanism to respond to global challenges and support progressive agendas for the water and sanitation sector. Programmes are made up of portfolios of projects and activities working towards a common [programme] goal coordinated by members of staff in close cooperation with members and partners. The six thematic programmes of the Association are below.


NHBRC (National Home Builders Registration Council)

The National Home Builders Registration Council (NHBRC) is a regulator body of the home building industry.  Our goal is to assist and protect housing consumers who have been exposed to contractors who deliver housing units of substandard design, workmanship and poor quality material. No matter the size or value of your home building project the NHBRC is here to protect you, the housing consumer.



SAICE (South African Institution of Civil Engineering)

The SAICE strives to advance professional knowledge and improve the practice of civil engineering: • to be a learned society for all those associated with civil engineering; • to enable our members, through consultation and accountability, to provide the community with environmentally and economically sustainable infrastructure; • to cater for the interests and needs of our members by creating an effective communication channel in a strong, dynamic and stable organisation; • to provide our members with continuing education in technical, managerial and communication skills, etc.


WISA (Water Institute of South Africa)

WISA`s vision is the promotion of professional excellence in the water sector, through building expertise, sharing knowledge and improving quality of life. WISA`s mission is to be your professional, comprehensive, independent, volunteer, water sector community institution, that provides diverse membership benefits, and support the Africa water sector in a representative and effective way. It strives to be an effective and efficient organization, subscribing to the principles of its memorandum of incorporation and complying with process of good corporate governance.



SACNASP (South African Council for Natural Scientific Professions)

SACNASP is the legislated regulatory body for natural science practitioners in South Africa. The natural sciences encompass a wide range of scientific fields covering all of the basic sciences and many of their applied derivatives. For a complete list of the current fields of practise recognised by SACNASP, please click here.

Our mission is to establish, direct, sustain and ensure a high level of professionalism and ethical conscience amongst our scientists. Their conduct should be internationally acceptable and in the broad interest of the community as outlined in the SACNASP Code of Conduct.



SACPCMP (South African Council for Project and Construction Management Professions)


The South African Council for Project and Construction Management Professions (SACPCMP) is a Juristic person established by Section 2 of the Project and Construction Management Act (Act No 48 of 2000). The SACPCMP was established to regulate Construction Management and Construction Project Management Professionals to protect the public.