Faithin Omaha eBook Collection

The Wastewater Operator's Guide to Preparing for the Certification Examination was prepared jointly by the Water Environment Federation, the Association of Boar

Pass your wastewater certification exam the first time! This study guide is specially developed to give wastewater operators practice answering questions that a

Formerly WEF/ABC Certification Study Guide for Wastewater Treatment Personnel, this newly revised and expanded version of the best-selling WEF/ABC publication i

This book is for newer wastewater treatment operators who are studying for the Grade 2 exam (second certification level from the bottom). It contains 360 questi