Distribution System Any connection between a potable water system and another fluid system through which contamination could enter the potable water system. Tags: Backflow Prevention Devices, Certification Exam Prep, Cross-connection, Distribution System, Wastewater Treatment Read more articles Previous PostIron and Manganese Next PostLime Softening You Might Also Like BOD Removal Efficiency Problem – Wastewater Math May 26, 2016 State Certification Information | California Distribution Certification Renewal June 15, 2018 Water Treatment and Distribution System January 17, 2017 Post author: Post published:January 27, 2017 Post category:Certification Exams / Distribution / Water Treatment