225 ILCS 37/20

A person is qualified to be licensed as an environmental health practitioner if that person: (1) Has applied in writing on the prescribed forms, has paid the required fee, and holds one of the following: (A) A Bachelor's Degree in environmental health science from a college or university approved by the National Environmental Health Association Accreditation Council for environmental health curricula or its equivalent as approved by the Department. (B) A Bachelor's Degree from an accredited college or university which included a minimum of 30 semester hours or equivalent of basic sciences acceptable to the Department and 12 months of full time experience. (C) A Master's Degree in public health or environmental health science from an accredited college or university if the applicant has completed a minimum of 30 semester or equivalent hours of basic science acceptable to the Department. (2) Passes an examination authorized by the Department. The examination shall be of a character to give a fair test of the qualifications of the applicant to practice as an environmental health practitioner.