Mastering Water MathListen as Joe explains the five-step approach to solving any water treatment license exam math problem. Download the sample problem below and follow along. Links:Sample ProblemFREE Water Math VideosHow to Prepare to Pass By [email protected] | February 22, 2019 | Certification Exams . Collections . Distribution . Wastewater Treatment . Water Treatment | Tags: Distribution Operator Certification, Wastewater Operator Certification, water license exams, Water Treatment Math