This website is devoted to helping Environmental Health practitioners achieve the professional credentials, certifications, and licenses required to gain or maintain employment in this demanding scientific profession.   We are here to assist you who protect the environmental health of the nation:

1.  We offer the most comprehensive, frequently updated RS/REHS Examination Review Workbook
in the United States.  In the summer of 2011,  our lead author has painstakingly edited and updated the Workbook. We are very proud to offer you Edition 30, hot off the presses in August 2011.

2.  Since 1996, we have cohosted critically acclaimed Review Classes around the country in partnership with local and state health departments and the
National Environmental Health Association
 and it's state affiliates.