Water Treatment and Distribution System A DC electrical system for preventing corrosion of metal storage tanks and piping. Tags: Cathodic Protection, Certification Exams, Water Distribution System, Water Treatment Read more articles Previous PostBOD Removal Efficiency Problem – Wastewater Math Next PostWater Storage You Might Also Like Texas Class A Water System Operator Requirements June 10, 2017 Mastering Water Math February 22, 2019 How to Study for Water Treatment License Exams – Part 5 of 10 October 1, 2018 Post author: Post published:January 10, 2017 Post category:Certification Exams / Distribution / Water Treatment