System Design & Layout A distribution system layout in which all ends of the mains are connected to eliminate dead ends. Tags: Certification Exam Prep, Distribution System, Grid System, Water Treatment Read more articles Previous PostAdvanced Treatment Next PostCoagulation & Flocculation You Might Also Like Filtration January 20, 2017 Texas Class B Water System Operator Requirements (part 2) June 13, 2017 How to Calculate Oxygen Transfer to Water – Wastewater Math October 18, 2017 Post author: Post published:February 4, 2017 Post category:Blog / Certification Exams