Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we covered a set of wastewater and drinking water treatment questions on the topics of Fusible Plugs; and Sodium Thiosulfate. This time, you can test your knowledge about plant effluent coliform count, and enteric virus removal.Wastewater Treatment Sample Question:The plant effluent coliform count fails to meet required standards for disinfection. The chlorine residual is normal. Inspection of the disinfectant supplies and equipment reveals no problems. What is the most probable cause of the elevated effluent coliform count?A) Capacity of chlorinator too lowB) Too
