Association - The Association & Register of Colon Hydrotherapists (formerly the Colonic International Association) was founded in 1987 by Dr. Milo Siewert as a professional association of qualified therapists graduating from his courses at the National College of Holistic Medicine. In 1990, it became a mutual association, independent of any teaching colleges, and adopted the aims and objectives still in force at this time.

It has been the lead body for colonic hydrotherapy since its inception and represents the largest number of Colon Hydrotherapists in the UK. 2007 is the 20th anniversary year for our association.