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Intrusion of seawater into ground water basins results from __________ - CORRECT ANSWER-Overpumping fresh water What is stratification in lakes and reservoirs? - CORRECT ANSWER-Formation of separate layers of temperature, plant life, or animal life. What causes the elevation and slope of water tables and artesian pressure levels to change? - CORRECT ANSWER-Seasonal variations in the water supply. How extensive should the treatment be for reclaimed water? - CORRECT ANSWER-Depends on pote...

1.0A What do water distribution system operators do with water distribution facilities? - CORRECT ANSWER-Water distribution system operators make sure water facilities do their intended job. Operators operate, maintain, repair , and manage these facilities. 1.0B What is the responsibility of water distribution system operators? - CORRECT ANSWER-Water distribution system operators have the responsibility of ensuring that safe and pleasant drinking water is delivered to everyone's tap. Al...

In a water distribution system, the corporation cock is located - CORRECT ANSWER-at the water main compression repair clamps should never be used - CORRECT ANSWER-underground a water and gas safety valve is designed to - CORRECT ANSWER-shut off water and gas in the event of a leak a globe valve would best be described as a(n) - CORRECT ANSWER-throttling valve A ____ valve should be used when water is run to a silcock or other appliance that may be subject to freezing. - CORRECT ANSWE...

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 - CORRECT ANSWER-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 - CORRECT ANSWER-Answer: b. 74 sq ft Which of the following is typically associated with trihalomethanes? a. Hi...

All complaints should be treated as legitimate and investigated as soon as possible. 1. True 2. False - CORRECT ANSWER-1. True Avoiding unnecessary water consumption, recycling trimmings, and limiting chemical use are important guidelines to environmentally friendly landscaping. 1. True 2. False - CORRECT ANSWER-1. True Exercising ( opening and closing) a valve should be done at the same time the valve inspection is made. 1. True 2. False - CORRECT ANSWER-1. True A Geographic Inf...

acid rain - CORRECT ANSWER-acidic precipitation caused by emissions from vehicles and factories reacting with water vapor in the atmosphere algae - CORRECT ANSWER-microscopic aquatic plant-like organisms that are a primary food source in many aquatic ecosystems algal bloom - CORRECT ANSWER-a rapid growth of algae in a body of water, which can deplete oxygen levels and harm other aquatic life anaerobic - CORRECT ANSWER-an environment lacking oxygen aquifer - CORRECT ANSWER-an undergro...

People need safe and pleasant water to drink 1. True 2. False - CORRECT ANSWER-1. True Cities and towns need qualified, capable, and dedicated water distributions system operators. 1. True 2. False - CORRECT ANSWER-1. True All waters, regardless of the source or treatment received, should be disinfected to prevent the spread of disease-causing organisms. 1. True 2. False - CORRECT ANSWER-1. True The overall appearance of pump stations and elevated tanks indicates to the public the...

T/F People need safe and pleasant water to drink - CORRECT ANSWER-True T/F Cities and towns need qualified, capable, and dedicated WDSO - CORRECT ANSWER-True T/F All waters, regardless of source or treatment received, should be disinfected to prevent the spread of disease causing organisms. - CORRECT ANSWER-True T/F The overall appearance of a facility indicates to the public the quality of your operation and maintenance program - CORRECT ANSWER-True T/F When someone contacts you abo...

New storage facilities and existing facilities that have been repaired, cleaned , painted, or had cathodic protection installed must be disinfected 1. True 2. False - CORRECT ANSWER-True When troubleshooting for water quality problems in storage tanks and distribution systems, chlorination is a potential solution for color problems. 1. True 2. False - CORRECT ANSWER-True Chlorine gas is used with small-capacity storage tanks because of the relatively high price of chlorine. 1. True ...

Why are many sources of water not directly suitable for drinking purposes without treatment? - CORRECT ANSWER-Because of pollution and contamination by humans and nature What is the major concern of the operators of water treat- ment plants and water distribution systems? - CORRECT ANSWER-To produce and deliver to consumers water that is safe and pleasant to drink What is the purpose of prechlorination? - CORRECT ANSWER-To kill most disease-causing organisms and help control taste- and odo...

Water bearing strata - CORRECT ANSWER-The term aquifer refers to? Water of consistent quality - CORRECT ANSWER-The use of a well supply as a source normally results in? The quantity of water that can be taken from a source of supply over a period of years without depleting the source permanently - CORRECT ANSWER-Maximum Safe Yield of a water source is? Percolation - CORRECT ANSWER-Movement of water through the ground is called? Suction - CORRECT ANSWER-The inlet into a pump is genera...

T/F The water suppliers management and operators have the legal responsibility for delivering a safe water to their customers. - CORRECT ANSWER-True T/F Proper operation and maintenance will keep the distribution system operating smoothly and will extend the useful life of the facilities - CORRECT ANSWER-True T/F Operators should use force to remove a vandal encountered on utility property - CORRECT ANSWER-False T/F Alack of chlorine residual in a system could indicate the potential pre...

True - CORRECT ANSWER-T/F Of special importance to distribution systems operation is the maintenance of a continuous positive water pressure in the system under all conditions so as to protect the distribution systems from the entrance of toxic and other undesirable substances False. (Downward) - CORRECT ANSWER-T/F They hydraulic grade line always slopes upward in the direction of flow False (no protection) - CORRECT ANSWER-T/F Uncovered distribution reservoirs are desirable due to the ade...

b) Kilopascals - CORRECT ANSWER-What units are used to measure water pressure? a) Kilowatts b) Kilopascals c) Horsepower d) Head units a) Exhaust fan - CORRECT ANSWER-Which of the following is NOT an example of PPE (Personal Protective Equipment)? a) Exhaust fan b) SCBA c) Face shield d) Traffic vest d) Be the operator with overall operational responsibility of the system - CORRECT ANSWER-Which of the following are operators-in-training NOT allowed to do? a) There are no res...

An operator as defined by NM water quality control commission regulations is? - CORRECT ANSWER-Any person responsible for the operation of all or any portion of a water supply system or wastewater facility The primary goal of the Safe Drinking Water Act (SDWA) - CORRECT ANSWER-Make sure public waters systems treat the water to meet water quality standards, designed to protect the public from unnecessary health risks WST level 1 certification - CORRECT ANSWER-covers the collection of water ...

What are the benefits of a distribution system storage? - CORRECT ANSWER-1. Demands on the source of water, pumping facilities, and transmission/distribution mains are more equalized. 2. System flows and pressures are improved/stabilized. 3. Reserve water supplies are available in case of emergencies. Types of Common Storage Facilities? - CORRECT ANSWER-Clear wells, elevated tanks, standpipes, ground-level storage tanks, hydropneumatic/pressure tanks, and surge tanks What is Coliform? - CO...

What is the purpose of water distribution systems? - CORRECT ANSWER-To deliver adequate quantities of water at sufficient pressure at all times under continually changing conditions while at the same time protecting water quality What is the purpose of vacuum, pressure-relief, and pressure-reducing valves? - CORRECT ANSWER-To prevent pipe damage from negative or excessively high pressures Under what conditions is the solid-sheeting shoring method used? When it is necessary to - CORRECT ANS...

The SDWA defines a public water system that supplies piped water for human consumption as on that has: 10 services connections or serves 20 or more people for 60 or more days per year 15 service connections or serves 20 or more people for 90 or more days per year 15 service connections or serves 25 or more people for 60 or more days per year - CORRECT ANSWER-15 service connections or serves 25 or more people for 60 or more days per year What US agency establishes drinking water sta...

Over pumping and depleting the aquifer - CORRECT ANSWER-Intrusion of seawater into groundwater basins result from? What is stratification in lakes and reservoirs? - CORRECT ANSWER-Formation of separate layers of temperature, plant life, or animal life What causes the elevation and slope of water tables and artesian pressure levels to change? - CORRECT ANSWER-Seasonal variations in the supply of water How extensive should the treatment be for reclaimed water? - CORRECT ANSWER-Depends on ...

FDOT Final Estimates Exam Questions With 100% Correct Answers