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 How to Calculate Volatile Solids Reduction – Wastewater August 16, 2017 Disinfection January 30, 2017 What is the difference between a CEU, a PDH, and a Contact Hour? March 7, 2013 Post author: Post published:February 4, 2017 Post category:Blog / Certification Exams