New Mexico Advance Water Operator Certification Practice Test

These questions are part of the practice quiz. Start practicing

• What type of electrical current is used in cathodic protection?
• What property of the fluid being pumped is critical for selecting a diaphragm pump?
• Which of the following is a common result of low suction head in a pump?
• What is the temperature at which water freezes on the Celsius scale?
• What is the Maximum Contaminant Level (MCL) for Total Trihalomethanes in mg/l?
• How long should a rapid sand filter run time not exceed?
• How high can a centrifugal pump theoretically push water in feet?
• What is the regulation minimum design pressure in a distribution system?
• In the rapid mix process, what is the detention time in minutes?
• Which component is essential to ensure a potable water system is effectively protected?
• What should be marked on the form when collecting special microbiological samples?
• How many people must a public water system serve to be classified under New Mexico regulations?
• How many milliliters are needed for a pH sample?
• What is the primary role of cathodic protection in water systems?
• For how many years must chemical sampling results be kept?
• Which component in a diaphragm pump is known to cause significant maintenance issues?
• What does MCL stand for in the context of water safety regulations?
• At what concentration does iron become problematic for water systems?
• Which type of algae is known for causing clogging issues in filter beds?
• For how many years must sanitary survey records be maintained?
• What type of filter is generally known for being more efficient due to rapid filtration rates?
• What is the main function of check valves in pumping systems?
• Which of the following describes a characteristic of potable water?
• Which type of filter can be classified as a slow sand filter, rapid sand filter, or high rate filter?
• How many compliance periods are there in the SDWA Compliance Cycle for Standardized Monitoring Rule?
• What is the purpose of cathodic protection in water systems?
• Which two chemicals are commonly used as sources of fluoride?
• The DPD test is primarily used for what type of analysis?
• Which of the following describes the chemical process of chlorination?
• Which factor is used in the Hazen and Williams equation to determine headloss in a pipe?
• Common sources of microbiological contamination in water include?
• What term describes substances that are water fearing, particularly in terms of turbidity?
• Which of the following contaminants is specifically regulated due to its impact on public health?
• Regular testing of public water systems helps to ensure compliance with which standards?
• What is the maximum head loss allowed for a rapid sand filter?
• What is one consequence of inadequate maintenance of a sediment basin?
• What should the backwash rate be for a rapid sand filter in gallons per minute per square foot?
• In what situation would an altitude valve be utilized?
• Why is it important to ensure no outdoor faucet drips when taking samples?
• Cavitation can be temporarily corrected by throttling which valve?
• Which of the following is an integral component for sedimentation processes in water treatment?
• What organization is primarily responsible for the regulations concerning drinking water quality in New Mexico?
• What is the action level for copper in drinking water?
• What is the primary property of turbidity that causes electro-chemical repulsion?
• Why is it important to take compliance samples at the beginning of the week?
• Why is it important to develop drinking water distribution system sampling plans?
• Which instrument is used to measure turbidity?
• How many feet should negative suction head not exceed to prevent potential issues?
• Which of these contaminants requires specific testing as mandated by the SDWA?
• What is likely to cause quality issues in a groundwater system?
• What are polyphosphates, including sodium hexametaphosphate, commonly used as?
• What is defined as the relationship between the yield of a well and the amount of drawdown in the well?
• Which contaminant category includes lead and mercury?
• What term describes a high-molecular-weight synthetic organic compound that forms ions when dissolved in water?
• What is a common application for a peristaltic pump?
• Which type of living organisms are classified as microscopic and consist of a single cell?
• What happens if the drawdown of a well increases?
• What is the primary usage of a gate valve in a distribution system?
• How many times heavier than air is chlorine gas?
• Which fluoride compound is primarily used in municipal water treatment?
• Which of the following best describes colloidal substances?
• Radiological contaminants are primarily derived from what sources?
• What kind of life is defined as aquatic life?
• A holding tank may be required if iron is removed by what method?
• What is the maximum pressure a centrifugal pump can generate called?
• What are the three parts of a site sampling plan?
• What geological feature stores groundwater and is characterized by its porosity?
• What method is important to ensure safe water supply integrity?
• What is a potential consequence of not properly managing backwash times?
• What potential problem occurs when dissolved gases are released in a filter bed?
• Public wells should be located a minimum of how many feet from potential pollution sources?
• What can the presence of pathogens in water indicate?
• Which chemical is often used in water treatment for the removal of iron and manganese?
• What term describes a submicroscopic organism that can pass through filters capable of removing bacteria?
• What is the maximum contaminant level for Total Trihalomethanes in drinking water?
• Which type of colloidal particles are referred to as water loving?
• What is the correct method to connect a motor to a pump?
• What can pump motor misalignment potentially damage?
• What design feature helps to maintain the integrity of a filter under different loading conditions?
• Which cycle is essential for the continuous movement of water in the environment?
• What issue may result if the backwash time is too short?
• Which disinfectant is typically formed when ammonia is added to chlorine for water treatment?
• What type of sample is specifically classified as a lead and copper sample?
• Which type of polymer will attract positively charged turbidity particles?
• What is produced as a result of breakpoint chlorination?
• What aspect of pipe design does the "C' Factor" represent in hydraulic computations?
• What happens to the efficiency of a pump when cavitation occurs?
• Which treatment approach is effective for managing manganese problems?
• When should microbiological samples be collected aside from monitoring compliance?
• Why is fluoride commonly added to drinking water?
• What is the primary significance of the coliform group in water quality assessment?
• What effect does a water hammer have on water pipelines?
• What is the optimum concentration range of fluoride in water?
• What type of treatment primarily focuses on removing smaller particles that may not settle by gravity alone?
• What is the primary function of an underdrain in a filtration system?
• What component is essential for protecting potable water from contamination during filling operations?
• What is a common indicator that a faucet may not be suitable for sampling?
• What is the required retention period for chemical violation records?
• What type of contaminant is Iron classified as?
• During which week should compliance samples ideally be collected?
• What condition causes instrumentation to hunt for a setpoint?
• How many feet must ladders extend above the trench?
• How many hours do you have to report a radiological violation?
• Which meter type is composed of two meters that can read small and large flows?
• What combines coagulation, flocculation, and sedimentation in a single unit?
• What is the maximum flow velocity for flash mixers in feet per second?
• After how many hours should lead and copper samples be drawn from sites?
• What process refers to atmospheric moisture falling onto the Earth's surface?
• At what concentration is fluoride most effective for dental health?
• What chemical is commonly used to kill algae in lakes?
• What does the term 'ambient' refer to in relation to the atmosphere?
• What type of attachment is used to provide a sanitary seal between the well casing and the effluent line?
• How many days' worth of sequestering agent is recommended to keep iron from oxidizing?
• What is the smallest unit of life that is classified as a prokaryotic organism?
• How often should chlorine gas flexible feed tubes be replaced?
• What is the usual chemical threshold for manganese in water systems?
• What is the result of pre-chlorination intended to remove tastes and odors?
• To prevent chlorine gas from forming Chlorine Hydrate, what is the minimum temperature required in a chlorine room?
• What protects against backsiphonage and backflow in a water system?
• What type of valve is used when two storage tanks serving the same area have different overflow elevations?
• Chlorine is how many times heavier than water?
• What are small gelatinous masses formed in a liquid during coagulation known as?
• How many milliliters are required for a chlorine sample?
• Which of the following is NOT a waterborne pathogen commonly found in contaminated water?
• Which of the following should not be included in microbiological sample forms?
• For a 3-log removal requirement of Giardia Lamblia, what percentage of organisms can survive?
• Lead and copper samples should be taken from which of the following?
• How many years must radiological violation records be kept?
• What is the role of sedimentation in the conventional treatment process?
• What process is commonly used to remove taste and odor problems from water?
• What phenomenon is indicated by abnormally high head loss on recently backwashed filters?
• What is it called when dissimilar metals react with each other in an aqueous solution?
• Filter media sand should be sized so that the grains are between which of the following diameters?
• If an excavation is over how many feet deep, shoring may be needed?
• What is a primary characteristic of microorganisms?
• What additional equipment is needed to feed liquefied chlorine gas from a ton cylinder?
• When filling a water main, what should the water velocity not exceed?
• What is needed for instrumentation to set up correctly downstream?
• What should be checked to protect potable water quality from contamination?
• What device is installed in a sedimentation basin to prevent floating solids?
• What is the purpose of fusible plugs in chlorine cylinders?
• Black water issues are typically associated with which problem?
• Which primary contaminant is often added to water to prevent tooth decay?
• What primary contaminant shields harmful bacteria from disinfection processes?
• What is a characteristic of hydrophilic particles in water treatment?
• What is the minimum velocity required to flush a distribution system?
• What features do snap lid bottles have?
• Which factor is least likely to affect the efficiency of a chemical feed pump?
• Who is defined as anyone responsible for the operation of all or any portion of a water supply system or wastewater facility?
• Which process involves the combination of particles to form larger aggregates that settle?
• What are the byproducts formed when chlorine reacts with dissolved natural organic matter in drinking water?
• What samples should be representative of the water system?
• What types of tastes and odors can be effectively removed by aeration?
• What is the maximum time allowed before lead and copper samples are taken after water has been stagnant?
• What percentage of positive bacteriological samples can be allowed before a system is flagged?
• What term describes subsurface water that saturates geological formations?
• How many hours are allowed to analyze bacti samples?
• Which health risks are associated with the consumption of trihalomethanes?
• What is the term for the gases that form the Earth's atmosphere?
• What cycle describes the process of water being recycled between the earth and atmosphere?
• In the context of water supply, what is the effect of a clogged filter bed?
• What is the neutral pH value?
• Which substance has a secondary maximum contaminant level (MCL)?
• What branch of science deals with the properties and behavior of water?
• Which acids are formed when chlorine reacts with water?
• Which measurement is crucial when determining the dosage of fluoride?
• What term is used to describe the process that includes both evaporation and plant transpiration?
• What conditions can lead to cavitation in a pump?
• What is the recommended detention time for flash mixers in minutes?
• In relation to water operators, what is the significance of sampling results?
• How should all vents and overflows on a storage tank be equipped?
• Which device is used to measure NTU's in water?
• What is the purpose of wear rings in a pump system?
• Which information is typically found on a pump curve?
• Which component is located where the service is attached to the main?
• What term defines the layer of loose material and rock that makes up the Earth's surface?
• What factor is used to determine the optimum dosage of fluoride?
• What is the agglomeration of colloidal particles after coagulation called?
• What type of carbon should be added as far upstream of coagulation as possible?
• What can occur if a filter is run at too high of rate or for too long?
• What is the action level for lead in drinking water?
• What encompasses all forms of plant and animal life that live in water?
• What is a common reason to collect microbiological samples from newly installed water lines?
• What is the reason for screening all vents and overflows on storage tanks?
• What is the main purpose of disinfection in water treatment?
• What is the reporting time frame for chemical violations?
• What is the average detention time for the flocculation process?
• What type of bottles are supplied with colilert testing kits?
• Which type of bottle is primarily reusable for sampling?
• What is the minimum residual pressure in a distribution system without public notification?
• Bacteria, viruses, and protozoa fall under which type of contaminant?
• Gate valves typically have how many turns per inch?
• What is the maximum allowable total chlorine residual in drinking water?
• Which process involves the addition of a floc-forming chemical to water?
• What type of equipment is used to feed liquid fluoride or liquid chlorine?
• Which type of polymer will attract negatively charged turbidity particles?
• What process is referred to as the natural movement of water through the environment?
• What is the primary purpose of Nalgene bottles in sampling?
• What is typically the first step in determining the chlorine demand of water?
• What type of contaminants does the term "MCL" refer to in public water systems?
• What is the best method for removing organic tastes and odors from water?
• At what locations does compliance sampling typically occur in a drinking water system?
• In an uncovered storage tank, which organism is likely to grow?
• At what temperature should samples be refrigerated in degrees Fahrenheit?
• What is a common scale forming substance found in water?
• To ensure a pump installation maintains a positive suction head, what is a key design consideration?
• Flocculation is primarily achieved through which method?
• What is a mechanical joint used for in cast iron valves and fittings?
• Which term encompasses all the water present on Earth?
• Within how many hours must a failure to comply with NM Drinking Water Regulations be reported to NMED?
• Which tool is used for measuring shaft misalignment?
• What is the minimum acceptable temperature for storing water samples?
• How long should you flush the line before taking a sample?
• What does the "C" factor represent in fluid dynamics?
• How does the presence of cationic polymers affect water treatment processes?
• In the context of water treatment, what does the term "floc" refer to?
• What is a potential consequence of pump motor misalignment?
• Which type of algae is most likely to bloom in a maintained water feature?
• How often should fluoride testing occur?
• Microbiological samples in drinking water systems are taken from where?
• What do we call a porous, water-bearing geological formation?
• Which of the following is essential to monitor for optimal centrifugal pump performance?
• How many milliliters of water are needed for a bacteriological sample?
• What is the smallest division that a substance can be broken down to without separating its individual atoms?
• Which of the following is a common radiological contaminant?
• What type of filtration system involves both gravity and pressure in its operation?
• Who must review and approve drinking water distribution system sampling plans?
• Red water problems are primarily linked to which substance?
• What is the main operating unit in a centrifugal pump?
• Which of the following is a method to quantify turbidity levels in water?
• What is the main purpose of the filtration process in water treatment?
• What tool can be used to initially check coupling alignment?
• At what pressure must a distribution system be designed to comply with regulations?
• What process involves using low voltage current to concentrate corrosion on a sacrificial anode in a water tank?
• What is the maximum contaminant level (MCL) for iron in water?
• In sedimentation basins, what is the purpose of baffles?
• Which type of filter typically requires more backwashing to maintain function due to its design?
• What is the New Mexico Water Conservation Fee amount per 1000 gallons?
• If coliform bacteria are present in the water supply, what else may be present?
• Which contaminant category includes chemicals like herbicides and volatile organic chemicals?
• What term describes minute organisms, either plant or animal, that are typically invisible to the naked eye?
• What is Sodium Hypochlorite commonly used for?
• What legislation ensures public water systems treat water to meet quality standards?
• What is the primary issue associated with Trihalomethanes in drinking water?
• During backwash, how much should the filter bed expand as a percentage?
• To which authority must SDWA sampling results be reported in New Mexico?
• What is the recommended detention time for a sedimentation basin?
• What substance is recommended for treating a well for iron bacteria?
• What is a result of ineffective disinfection processes in water treatment?
• What type of disinfection is known as secondary disinfection in water treatment?
• Which primary inorganic contaminant poses an immediate health risk?
• Which of the following diseases is NOT directly associated with waterborne pathogens?
• What is the positive side of the cathodic protection system typically referred to?
• At what angle should the bottle be held while filling it for a sample?
• Which factor is critical for the longevity of a pump system?
• What is a physical link between a potable water system and one of unknown quality?
• What is the maximum temperature to maintain in a chlorine room to prevent cylinder rupturing from gas expansion?
• Which type of contaminants includes synthetic organic chemicals?
• If bacteriological retakes are required, what is the minimum number of samples that must be submitted next month?
• In plumbing systems, what component ensures the joint is tight and prevents leaks in cast iron pipes?
• What is the solid crust of the earth known as?
• What structure supports the filter media and collects filtered water while distributing backwash water?
• Which type of water treatment system may require a holding tank for effective iron removal?
• What is considered the best way to prevent cross-connection contamination in a water supply?
• When selecting a sampling point, why should you avoid using certain faucets?
• What is the maximum percentage of bacteriological samples that can be positive before violating drinking water standards?
• What is often caused by closing a valve too quickly in a water system?
• What scale is used in the Fahrenheit thermometer for boiling and freezing points?
• Which measure is essential to prevent iron oxidation in water treatment?
• What is the purpose of using chloramines in drinking water treatment?
• Which of the following is NOT considered part of the hydrosphere?
• Microbiological sampling may require moving locations for sampling due to what reason?
• From where are disinfection by-products samples collected?
• What is typically the main disadvantage of using chlorine gas in water treatment?
• Which of the following describes a common issue caused by running a filter at too high a head loss?
• What is the main source of atmospheric moisture that leads to precipitation?
• A trunk line in a large municipality should have an isolation valve every how many feet?
• When must positive bacti resampling take place?
• Coagulation in water treatment results in the formation of what?
• In water systems, what is often the result of using chlorine for disinfection?
• What is an important characteristic of gravity filters?
• What surrounds iron and manganese particles preventing them from oxidizing?
• Repeat bacti samples must be collected within how many hours?
• Which of the following best describes a primary function of a butterfly valve?
• Which of the following is NOT considered an inorganic contaminant?
• Which type of sample would NOT typically require a specific point of use?
• Which sampling type occurs at customers' plumbing fixtures?
• What type of overflow rate in a sediment basin ensures proper settling?
• In water treatment, what is the significance of filter breakthrough?
• What is the primary health concern related to turbidity in water treatment processes?
• Which term refers to the weight per unit volume of a substance?
• Which of the following is used to test chlorine levels in water?
• What percentage of unaccounted water is considered excessive in a water system?
• What term describes organisms that can cause diseases?
• What compound is commonly used to locate chlorine leaks?
• How often must ground water systems sample for inorganic chemicals?
• How many places must measurements be taken to check motor alignment?
• Which treatment standard is associated with removing contaminants in drinking water?
• What type of bacteria is commonly found in the environment and typically harmless?
• At what temperature do fusible plugs typically melt?
• What is used to hold sand back and allow a larger well screen to be installed?
• What is supplied to the stuffing box to lubricate and flush the packing or mechanical seal?
• Ladders in a trench must be located no more than how many feet from workers?
• Coliform bacteria are commonly found in which part of animals?
• What term describes the standard water treatment process that includes coagulation, flocculation, sedimentation, filtration, and disinfection?
• A density measurement describes what property of a substance?
• What is the recommended velocity for a rapid mixer in feet per second?
• What type of impurities do filtration systems primarily target?
• What happens to a filter bed during backwashing if excessive pressure is applied?
• What is the term for the movement of water into and through the ground?
• Which of the following describes the term 'molecule'?
• Which process involves the loss of water vapor to the atmosphere from living plants?
• What term is used for water that is safe for human consumption?
• Which process in water treatment involves the mixing of chemicals for flocculation reactions?
• What indicates the need for maintenance in a pump system?
• Why is fluoride classified as an Inorganic Primary Contaminant?
• What effect does a worn meter have on water usage reading?
• Which type of valve is best suited for throttling flows?
• When does manganese become a concern for water systems based on its concentration?
• What term describes the combined vaporization of water from surfaces and plants?
• During evapotranspiration, water is primarily lost from which sources?
• What are small, one-celled animals such as amoebae and ciliates classified as?
• What type of reading might you expect from a faulty water meter?
• What is the primary purpose of the New Mexico Water Conservation Fee?
• What condition is referred to as "Blue Baby Syndrome" due to the presence of nitrates in the bloodstream?
• In what manner should microbiological samples be taken to ensure accuracy?
• What term describes the water loss to the atmosphere from plants and surface bodies?
• If the drawdown in a well has decreased and the motor amps are high, what is the most likely problem?
• Which form of fluoride is classified as liquid fluoride?
• What may happen if sludge is not removed frequently from a sediment basin?
• An excavation over how many feet deep must have a ladder for access?
• What is considered the universal solvent?
• What is an important consideration when adding fluoride to water systems?
• What is the common coagulant used in water treatment processes?
• What is a potential consequence of failing to conduct adequate sampling in a water system?
• What term best describes the continuous recycling of Earth's renewable water supply?
• What are the two primary sources of water?
• What chemical is commonly used to kill algae in a lake?
• What is the term for the initial movement of water from the earth's surface into the soil?
• What term describes the distance from the well to the edge of the cone of depression?
• What is the clear vertical distance between the top of the filter medium and the lowest outlet of the upper distribution system in a permanent media filter called?