Operator Class D Study Guide Exam Questions (888 Terms) With Verified Definitions Updated 2024

Rivers may be high in {Ans: Bacteria and Organic Matter}The chemical symbol for water {Ans: H2O}Valves or check valves are not safe between {Ans: potable and unknown water supplies}Advantages of keeping a leak under pressure {Ans: no service interruption; reduced risk of contamination; reduces air in the main; ensures the repair holds under service}When planning a collection system you must consider what the population will be _____ years into the future. {Ans: 20 to 25}Prior to putting line into service you must have {Ans: negative bacteriological samples; 1 for each 1000 feet of main}