CIOWTS Basic Certified Installer of Wastewater Treatment Systems (NEHA) Exam Code- CIOWTSB Release / Update Date-Jan 8, 2015 This exam is currently on Pre-Order . You will get this exam 2 weeks after purchase . Please note price after Pre-order will be $139 , so this is savings of $50 If you ORDER Today. Question and Answer: 150 Edition: 2.0 Free Test Engine Included