ADEQ Water Distribution Grade 1 Certification Practice Exam

These questions are part of the practice quiz. Start practicing

• Which device has the greatest potential to cause contamination if a cross connection occurs?
• How should a water meter that is removed from service for repair be handled?
• Which two agencies are responsible for approving laboratory analytical methods for drinking water analysis?
• Name the three main classifications of water meters.
• What may occur due to chronic exposure to low concentrations of chlorine gas? Chronic exposure may cause corrosion of the _____________.
• How close must the remote operator of a facility be to the facility to legally operate it?
• What are the three elements that make up the elementary business plan?
• Which backflow device provides effective protection from both backpressure and backsiphonage?
• Upon expiration of an operator certificate, how many days does an operator have to reinstate the certificate without retaking an examination?
• What is the definition of an on-site representative?
• In regulatory terms, cross-connection is defined as a physical connection that may lead to contamination of water provided by which entity through backflow?
• A positive bacteriological sample indicates the presence of bacteriological ______.
• Which backflow prevention device is commonly required for protecting drinking water distribution systems from back-siphonage and backpressure?
• Normal breathing will cause what symptom when exposed to chlorine gas, which must be prevented if possible?
• Within how many days must a certified operator notify the Department (in writing) that the operator ceases or commences operation of another facility?
• Initial monitoring is conducted at which point in the water system?
• Which chemical is used to de-chlorinate a water sample that is analyzed for bacteria?
• Which treatment technique is NOT included in ADEQ grading a water facility?
• What is the inspection frequency that a remote operator must inspect a grade 1 or grade 2 water treatment plant or distribution system that produces groundwater?
• Which backflow prevention device includes a relief valve as part of its mechanism?
• What is the maximum time period between having a backflow device tested by a certified backflow tester?
• Before starting an excavation, who should be contacted to assist in determining the location of all underground utilities in the work area? An 'underground Service Alert' center, 'One Call Center' or Bluestake, all three of these are the same.
• What term describes a person located at a facility who monitors the daily operation at the facility and maintains contact with the remote operator?
• Which of the following completes the sentence: The water quality ______________ program is not in compliance?
• How often should ladders and climbing devices be inspected by a qualified individual?
• What is the name of a map that provides detailed drawings of the distribution system's zones?
• Which type of PWS is not required to sample for VOC's?
• What gauge is commonly selected for systems requiring electronic output and remote monitoring?
• In a cross-connection scenario, which equipment has the greatest potential to contaminate the water?
• This type of chemical classification may weaken, burn, or destroy a person's skin or eyes and can be either acidic or ______.
• What is the main purpose of wear rings in a centrifugal double suction pump?
• On suction piping, when the pump is above the water level, which component is used to hold the prime?
• Continuous leakage from a mechanical seal on a pump indicates the seal should be
• Which of the following are considered pressure sensing devices?
• Which type of water pressure must be maintained to ensure adequate service during peak flow periods?
• If a centrifugal pump is located above the water level, what must be provided on the suction piping to hold the prime?
• Which gauge type is favored for easy integration with electronic control systems and data logging?
• What does a backsiphonage condition usually cause?
• Which statement correctly describes the operation of a reduced pressure principle backflow assembly?
• A common cause of pump cavitation is which of the following?
• A positive bacteriological sample indicates the presence of bacteriological ______.
• When grease contaminates a motor winding, what is a likely consequence?
• Which valve is most commonly used to isolate a small or medium sized section of a distribution system?
• Pump cavitation can be caused by which condition?
• In automation environments, which gauge provides a digital readout suitable for data logging?
• How should a supervisor warn an operator about the presence of a confined space? By clearly posting the appropriate ____________ at all entries to a confined space.
• Systems with which type of source water are required by law to treat using filtration and disinfection?
• Which gauge is preferred when installation requires compatibility with digital controllers and alarms?
• What is equipment that utilizes water for cooling, lubrication, washing or as a solvent always susceptible to?
• What device helps keep the pump primed by preventing backflow in the suction line?
• _______________ available chlorine is very effective in killing bacteria.
• Which distribution valve is NOT classified as rotary valve?
• Which gauge type yields a digital readout and is commonly used where data integration and automation are important?
• Which chemical reaction equation represents the dissociation of hypochlorite acid?
• Which type of motors would be expected to have the lowest demand for a starting current?
• Which of the following is a required element of confined space entry procedures?
• Which type of gauge is most widely used in modern instrumentation?
• Which term completes the phrase: Physical, ______, biological, radiological are broad water quality categories?
• Which of the following lists all three types of three-phase motors commonly used?
• What is the objective of vulnerability assessment?
• In contemporary instrumentation, which gauge provides electronic output and easy data integration?
• What negative effect may occur on a service due to a water meter?
• Which valve is designed for connecting a new main to an existing pressurized main?
• During a chlorine leak, what action should you take to maximize safety?
• Which contaminants does the Monitoring Assistance Program monitor?
• The interior coating of a storage tank typically lasts in which time range?
• Which statement about a double check valve backflow assembly is true?
• Which statement about gate valves is true?
• What maintains contact between the two surfaces of a mechanical seal?
• What is the acceptable oxygen concentration range before entering a confined space?
• Which safety measure should be posted at all entries to a confined space?
• Lantern rings are used in a pump stuffing box to:
• Which statement best describes the function of a bypass valve in a pipeline system?
• Generally, how long will a water storage tank's interior coating protect the interior?
• Regarding confined space entry, when might a self-contained breathing apparatus (SCBA) be necessary?
• What is the general definition of an ion?
• Which disease is NOT transmitted by water?
• Which device is used to prevent backflow on a service connection?
• A pressure tap is used to measure pressure at a point in a distribution system.
• Which statement accurately describes the remote operator distance requirement?
• What are disease-causing organisms such as bacteria and viruses called?
• What is the name of the area from which surface runoff is carried away by a single drainage system?
• According to Arizona State Rule, which term refers to derivatives of methane where 3 of 4 hydrogen atoms are substituted by a halogen atom?
• Name the most common cause for public water supply contamination.
• Under what circumstances may the Department reduce monitoring frequency for nitrate at a surface water sampling point and what is the reduced frequency?
• What is the unit of measurement for sound?
• What term describes the pressure surge caused by rapid changes in water flow?
• If grease comes into contact with a motor winding, what is a possible effect on the winding insulation?
• The pH scale ranges from zero to 14. Which option correctly represents this range?
• What must an operator ensure when installing a pressure vacuum breaker backflow device? It must be at least ______ inches above the highest downstream outlet.
• Which practice is essential to prevent backflow in a distribution system?
• Which gauge type provides a direct digital signal and is widely used in instrumentation?
• For instruments requiring rapid digital readouts, which gauge is typically used?
• Name the four broad categories of water quality. Physical, ______, biological, radiological.
• What is the difference between a reduced pressure principle backflow device and a double check backflow device? The RP has a __________.
• What type of valve is used where the valve is not buried and an operator will need to know from an inspection whether the valve is open or closed?
• Which statement about air-gap separation distance is true?
• How close must a certified operator live to operate remotely?
• What is the frequency that a remote operator must inspect a grade 1 or grade 2 water treatment plant or distributes groundwater?
• Which of the following is a disease-causing organism?
• An on-site operation is performed by an operator who visits a facility at least what frequency to ensure proper operation?
• The term 'peak demand' refers to which of the following?
• Water hammer exerts tremendous force on a system and can be highly ____.
• How should an operator store an empty chlorine cylinder? ____________, tagged as empty.
• Which statement correctly describes seals for high suction head pumps?
• Which entity is NOT responsible for approving laboratory analytical methods for drinking water analysis?
• What is the minimum distance required for an air-gap separation?
• Which statement describes the operation of a reduced pressure principle backflow assembly?
• A possible result of over greasing a bearing is:
• What gauge type is preferred when clear readability and data logging are priorities?
• A remote operator is allowed to operate at which type of facility?
• What is the commonly cited range of the pH scale?
• How far from the edge of a hole must you place the spoil from an excavation?
• In a pump stuffing box, which item is used to prevent air from entering without causing excessive heat and wear on the shaft sleeve?
• Which type of single-phase motor is described as simpler and less expensive?
• Which statement about a capacitor-start single-phase motor is true?
• On-site representative means a person located at a facility who monitors the daily operation and maintains contact with the ______ operator regarding the facility.
• If a chlorine leak occurs, where will chlorine gas accumulate? Near the ____________ of the tank.
• What is the primary purpose of shoring equipment in a trench?
• When storing an empty chlorine cylinder, which labeling practice should be used?
• In a permit-required confined space entry, how many persons must be present?
• Among common gauges used for measurements, which is considered the standard for modern process control due to its electronic compatibility?
• What is the definition of 'operator'?
• What is the purpose of the foot valve on a pump?
• What does the word 'stationing' on a plan drawing refer to?
• Which types of public water systems must comply with Article 6 Capacity Development Requirements for a New Public Water System?
• Which of the following lists the three types of three-phase motors?
• Who is allowed to conduct a sanitary survey?
• A Bellows-type sensor responds to a change in which variable?
• A continuous positive pressure in a distribution system is essential for preventing what event?
• Water age in a distribution system is best described as the amount of time that water has been within the system since treatment.
• Which of the following is NOT an element of the elementary business plan?
• What is an initial monitoring year?
• In a backsiphonage scenario, what kind of pressure is typically observed on the service or supply side?
• What is a possible cause of a scored shaft sleeve?
• When shutting a large valve, what will help to reduce high pressure?
• What is the reporting limit for all regulated VOC's?
• The peak day demand refers to the greatest amount of water used during which period?
• Chlorine exposure can cause which throat symptom?
• What is the common method to secure an impeller to the shaft on a double-suction pump?
• What is one disadvantage of a centrifugal pump?
• Before beginning an excavation, who should be contacted to assist in determining the location of all underground utilities in the work area? An 'underground Service Alert' center, 'One Call Center' or Bluestake, all three of these are the same.
• What does a double check valve backflow assembly provide effective protection from?
• What is the regulatory definition of a cross-connection in a water supply? A physical connection between a public water system and any source of water or other substance that may lead to contamination of the water provided by the __________ through backflow.
• True or false: A remote operator is allowed to operate at any Grade 1 or Grade 2 facility.
• The initial monitoring year is defined as the calendar year designated by the Department within a compliance period in which a public water system conducts initial monitoring at a point of entry. Which element best describes this year?
• In modern instrumentation, which gauge is commonly used for direct digital readouts and PLC/SCADA interfacing?
• What is the minimum inspection frequency for a remote operator at a grade 1 or grade 2 groundwater-producing facility?
• How does a double suction pump operate?
• Which option is not among the three main water meter classifications?
• What is the name of the valve that reduces the differential pressure across a closed disk, making the main valve easier to open and close?
• For new installations emphasizing digital communication with control systems, which gauge is recommended?
• Which gauge is designed to provide a digital display and electronic signal rather than a purely mechanical indication?
• A Bellows-type sensor responds to a change in which parameter?
• Which statement best defines stationing on a plan drawing?
• Which pump is commonly used as a booster pump in a water distribution system?
• List the correct order for placing shoring equipment in a trench. Starting at the top move to the bottom of the trench and ____________ to remove it.
• What effect does chlorine gas have on the sense of smell? It produces olfactory ___________.
• On-site operator mandatory at which facility grades?
• If a water meter causes head loss, which parameter is affected most directly?
• What is the primary safety concern when using chlorine gas as opposed to calcium hypochlorite or sodium hypochlorite? The potential for a _____________ leak.
• For high suction head conditions, which seal is best?
• This statement is NOT correct about a pressure tap?
• Remote operator operation allowed at which facility grades?
• Chlorine gas causes edema of the ______________.
• What is an advantage of a 'wet tap' vs. a 'dry tap'? You do not need to ______ the water line down.
• Which gauge type is most suitable for automated data collection and minimizing parallax error?
• What is the name of the valve designed for connecting a new water main to an existing main under pressure?
• Peak day demand is the greatest amount of water used for any one ______ in a calendar year.
• In a centrifugal double-suction pump, wear rings are used to maintain what between the impeller discharge and suction areas?
• What is the most likely symptom one could expect upon exposure to a very small percentage of chlorine in the air? A ______ sensation in the eyes and throat.
• Under what condition may nitrate monitoring frequency be reduced from quarterly to annually?
• What is the process called that changes water vapor to tiny droplets or ice crystals?
• Chlorine gas detection by smell can become unreliable over time due to what phenomenon?
• Before performing work on any electrical equipment, what safety action should an operator perform?
• An on-site operation is defined as an operator who visits a facility at least ______ to ensure that it is operating properly.
• The common method to secure an impeller to the shaft on a double-suction pump is what?
• Define the term 'Water Hammer'.
• Which of the following lists types of pressure sensing devices?
• Which of the following best describes the purpose of posting signage at confined space entries?