225 ILCS 37/25
Applications for original licenses shall be made to the Department on forms prescribed by the Department and accompanied by the required nonrefundable fee. All applications shall contain information that, in the judgment of the Department, will enable the Department to pass on the qualifications of the applicant for a license as an environmental health practitioner or environmental health practitioner in training.
If an applicant for a license as an environmental health practitioner neglects, fails, or refuses to take an examination or fails to pass an examination for a license under this Act within 3 years after filing an application, the application is denied. However, the applicant may thereafter make a new application, accompanied by the required fee, if the applicant meets the requirements in force at the time of making the new application.
225 ILCS 37/25