• IOHA 2018 takes place in Washington, USA
  • IOHA 2015 took place in London.

Welcome to IOHA

The International Occupational Hygiene Association (IOHA) represents the global community of occupational hygienists.  IOHA is an association of occupational hygiene organisations from across the world, all of which are dedicated to the discipline and application of the inherent principles of occupational hygiene.

The Occupational Hygiene Training Association (OHTA) was formed to promote better standards of occupational hygiene practice throughout the world and provide IOHA support OHTA and are working together to provide formal recognition of the qualifications delivered by the OHTA training programmes.


IOHA 2018 will take place in Washington, USA from the 24-26 September 2018

Visit the conference website for more info


IOHA 10th International Scientific Conference
took place in London on the 25-30 April 2015
Visit the conference website to access presentations, photos and much, much more