WEF Skills Builder Exam Quizzes The Water Environment Federation (WEF) is now offering online exam quizzes on wastewater and laboratory topics. This is a great resource if you are preparing to take a certification exam or simply want to test your knowledge. Quizzes are available in fundamental, intermediate and advanced categories. New quizzes are posted every month.
This book is a revision to the 2002 edition of WEF/ABC Collection Systems Operators’ Guide to Preparing for the Certification Examination, which formerly was titled WEF/ABC Certification Study Guide for Collection Systems Personnel (1993). The book was developed by 13 authors based on sectorwide job analyses and six different need-to-know criteria.