The Drinking Water Board adopts and enforces rules related to public drinking water systems. Operators are required to be certified. The certification levels needed for water system depending on the population to be served. There are two tracks, and each has 4 different grades. The water distribution track has multiple exam grades. The questions provided in this product focus on the fundamental water distribution knowledge compatible with all exam grades. We create these self-practice test questions module referencing the principles and concepts currently valid in the water distribution exams. Each question comes with an answer and a short explanation which aids you in seeking further study information. For purpose of exam readiness drilling, this product includes questions that have varying numbers of choices. Some have 2 while some have 5 or 6. We want to make sure these questions are tough enough to really test your readiness and draw your focus to the weak areas. You should use this product together with other study resources for the best possible exam prep coverage.

The Drinking Water Board adopts and enforces rules related to public drinking water systems. Operators are required to be certified. The certification levels needed for water system depending on the population to be served. There are two tracks, one for TREATMENT and another for Distribution. Each has 4 different grades. The questions provided in this product focus on the Water Treatment Processes of Rapid Mixing, Coagulation and Flocculation, Water Fluoridation, Sedimentation, Filtration, and Disinfection. These are the knowledge required on all treatment exam grades. We create these self-practice test questions module referencing the principles and concepts currently valid in the water treatment exams. Each question comes with an answer and a short explanation which aids you in seeking further study information. For purpose of exam readiness drilling, this product includes questions that have varying numbers of choices. Some have 2 while some have 5 or 6. We want to make sure these questions are tough enough to really test your readiness and draw your focus to the weak areas. You should use this product together with other study resources for the best possible exam prep coverage.

Who is this book for? This book is for anyone studying for the Grade 2 Water Distribution Operator Certification Exam. It's intended for newer operators. Grade 2 refers to the second certification level from the bottom. What's inside this book? This book contains three full-length practice tests that are based on the Grade 2 Water Distribution Operator Certification Exam. Each exam consists of 100 questions, which test your knowledge of water distribution concepts, and your ability to solve relevant math problems. There are a total of 300 questions in this book. Which topics are covered in this book? Concepts: 1. Water regulations 2. Water sources 3. Water mains 4. Tanks and reservoirs 5. Hydrants 6. Water meters 7. Valves 8. Water services 9. Cross connection 10. Wells 11. Pumps and motors 12. Disinfection 13. Operation and maintenance 14. Safety 15. Security and emergency preparedness 16. Mapping 17. Water quality 18. Hydraulics 19. Backflow devices 20. Sampling 21. Leak detection 22. Cathodic protection 23. Flushing Water math: 1. Disinfection 2. Lbs of chlorine gas required 3. Lbs of calcium hypochlorite required 4. Lbs of sodium hypochlorite required 5. Gallons of sodium hypochlorite required 6. Chlorine demand 7. Mixing solutions 8. Air line in a well 9. Specific capacity of a well 10. Pumps - energy cost 11. Pumping water to a tank 12. Water meters 13. Water pressure in a tank 14. Water level in a tank 15. Fill time for a tank 16. Fill time for a pipeline 17. Detention time 18. Flushing 19. Flowrate 20. Water velocity 21. Water usage from a tank

Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamination that has yet to be fully addressed. This report evaluates approaches for risk characterization and recent data, and it identifies a variety of strategies that could be considered to reduce the risks posed by water-quality deteriorating events in distribution systems. Particular attention is given to backflow events via cross connections, the potential for contamination of the distribution system during construction and repair activities, maintenance of storage facilities, and the role of premise plumbing in public health risk. The report also identifies advances in detection, monitoring and modeling, analytical methods, and research and development opportunities that will enable the water supply industry to further reduce risks associated with drinking water distribution systems.

This book is for newer wastewater treatment operators who are studying for the Grade 2 exam (second certification level from the bottom). It contains 360 questions that help operators prepare for the wastewater treatment operator certification exam. There are 4 full-length practice exams in this book. Each test consists of 90 questions that cover wastewater treatment concepts and relevant math problems. The first two exams are all multiple choice, while the last two exams contain both true/false and multiple choice questions. Topics covered: Preliminary Treatment, Screening, Grit Channel, Primary Treatment, Primary Sedimentation, Secondary Treatment, Trickling Filters, Activated Sludge, RBC, Secondary Sedimentation, Waste Stabilization Ponds, Disinfection, Sludge Handling, Anaerobic Digestion, Safety, Sampling, Pumps, Laboratory Work, Analysis of Wastewater Constituents, and Basic Supervision Responsibilities. Math Section: Hydraulic Loading, Organic Loading, SVI, Removal Efficiency, F/M Ratio, MCRT, Pumping Rate, Percent Volatile Solids Reduction, Flowrate of Primary Sludge, Detention Time, Chlorine Residual and Demand, Weir Overflow Rate, Sludge Age, Surface Loading Rate, Solids Loading Rate, and Population Loading.