Water Distribution - Additional Sample Questions and Answers 100% Correct(RATED A+)

A 6-in. pipeline needs to be flushed. If the desired length of pipeline to be flushed is 316 ft, how many minutes will it take to flush the line at 31 gpm? a. 10 minutes b. 15 minutes c. 30 minutes d. 60 minutes - Answer: b. 15 minutes What is the area of a trench that is 22.4 ft long and 3.3 ft wide? a. 26 sq ft b. 74 sq ft c. 143 sq ft d. 187 sq ft - Answer: b. 74 sq ft Which of the following is typically associated with trihalomethanes? a. High levels of carbon dioxide in a surface water source b. Surface water high in inorganics c. Water with organics that has been chlorinated d. Groundwater of surface water high in inorganics - Answer: c. Water with organics that has been chlorinated Which of the following mandates the language and methods for public notification? a. American Water Works Association b. National Rural Water Association c. US Environmental Protection Agency d. California State University - Answer: c. US Environmental Protection Agency What is the primary source of lead in drinking water? a. Lakes b. Rivers near lead mines c. Corrosion of plumbing systems d. Groundwater - Answer: c. Corrosion of plumbing systems Interior copper tubing is usually joined by a. Solder b. Flare c. Compression d. Union - Answer: a. Solder Fire demand can account for what percent of the total capacity of a storage system? a. 20% b. 3