TCEQ Class B Surface Water License Practice Test

These questions are part of the practice quiz. Start practicing

• What is the shape of mud balls that can form in filter beds?
• What is the typical range of gallons per minute per square foot for filter influent?
• What does the term "water horsepower" refer to?
• The average gravel depth for filters typically ranges from how many inches?
• If short filter runs are occurring due to high head loss, what should be reduced?
• Why is it important to remove turbidity before disinfection?
• What advantages are attributed to using anthracite in filtration?
• What happens to super-saturated oxygen in a dissolved-air flotation basin when pressure is released?
• What application is used for injecting chlorine into inlet raw water?
• What is the recommended inlet water velocity into a filter?
• Aeration oxidizes which two elements to form insoluble precipitates?
• What can replace a metal coagulant in water treatment processes?
• Which of the following is NOT a characteristic that influences filter performance?
• What factors determine the rate of disinfection?
• Employers are responsible for training employees about what aspect of workplace safety?
• What is the most important factor affecting the useful life of service lines?
• How does the rate of decrease of filter head loss indicate filtration effectiveness?
• The filtration process is primarily influenced by which of the following?
• What is the primary function of the mixer in the coagulation process?
• What type of law is the Hazard Communication Act (HCA) of 1985?
• Which of the following statements is true regarding the Jar Test?
• In which method of chlorine application is it injected prior to filters?
• How must new mains be disinfected before being put into service?
• Is a smooth filter sidewall beneficial for preventing water short-circuiting?
• Which of the following statements is false about filtration systems?
• What action should NOT be taken after a jar test?
• What is the main purpose of an underdrain in a filtration system?
• How can the quantity of filtered water be optimized in a treatment facility?
• What is the function of a check valve on the pump discharge?
• What is the effect of stirring the floc in a gentle manner?
• What is the result of cracks impacting filter efficiency during filtration?
• Which of the following is not considered an alternative for sludge disposal?
• Which factors influence filter head loss?
• Which component is crucial for effective floc formation in sedimentation?
• What does concentration refer to in a solution?
• What does filtration pass treated water through, according to the text?
• Which of the following accurately characterizes flocculators?
• What is the maximum allowable NTUs before and after chemical addition at a treatment goal?
• Which of the following should be included in daily sedimentation process records?
• Should plants with single basins be capable of draining in 12 hours?
• What factors affect coagulation in water treatment?
• What does an operator need to understand when operating a sludge blanket clarifier?
• What are the most important characteristics of filter media?
• Which condition defines the angle of repose in excavation safety?
• What is the effect of a properly operated and maintained filter?
• What maximum filtration rate must be used for high-rate filters?
• How many hours of operation typically trigger backwash for a filter?
• Where is the rate-of-flow controller installed in a filtration system?
• What is the relationship between pH and coagulation process efficiency?
• Which factor does NOT affect particle settling in water?
• What does a sludge blanket clarifier maintain?
• What is the most important design factor for filters?
• Which properties of sand have a significant effect on filtration?
• What is the goal when distributing reservoir influent?
• How does flow behave in a rectangular sedimentation basin?
• What three purposes do under-drains serve?
• What ratio of chlorine to ammonia indicates stage 2 of the Chlorine Demand Curve?
• Which of these methods is used for backflow prevention?
• What can result from anaerobic decomposition in water bodies due to stratification?
• What is the minimum detention time required for flocculation facilities for basins built after October 1, 2000?
• What is the ideal height for the tops of troughs above the sand during operation?
• How is chlorine dosage calculated?
• How often should you test your water system for radiation?
• What follows the flash or rapid mix in the flocculation process?
• During thermal stratification, what happens to the bottom layer of water?
• What is the retention time for microbiological analysis records according to Texas law?
• Which of the following is an example of a community water system?
• What is an effect of improper coagulation in filtration?
• Which coagulant chemical is most widely used?
• What happens to chloramines and chloro-organics during stage 3 of the Chlorine Demand Curve?
• Are filters designed to remove dissolved matter?
• What type of filtration issue can result from sand clogging?
• Which chemical is incorrectly attributed as the main coagulant when compared to alum?
• In water filtration systems, what does high filtration rate typically indicate?
• What is a significant advantage of using free chlorine in disinfection systems?
• What issue is commonly noticed when overfeeding chlorine (CL2)?
• What is the role of a zeta-meter test in water treatment?
• What is TCEQ's requirement for plants with a capacity greater than 3 mgd?
• What is the effect of uneven loading during filtration?
• The rate of backwash water shall not be less than ________ of vertical rise per minute and usually not more than ________ of vertical rise per minute.
• What chlorine level condition warrants a boil water notification?
• Surface wash systems must have a/an ________ vacuum breaker or a reduced pressure principle backflow assembly in the supply line.
• What type of taps must all filters have to monitor effluent turbidity?
• What is a primary limitation when discharging sludge to a wastewater collection system?
• What does the "C factor" measure in pipe systems?
• According to the Texas Hazard Communication Act, what must employers provide to their employees?
• What factors influence the coagulation process in water treatment?
• What occurs in the contact zone of a dissolved-air flotation basin?
• How are above-ground tanks and piping protected from corrosion?
• How are chemical feeders classified in water treatment processes?
• When observing the water in the flash mixing channel, operators should check for which factors?
• If a system exceeds what NTU in the combined effluent, it must notify the public drinking water program?
• Floc can effectively reduce turbidity through what process?
• Which of the following is NOT a factor affecting filtration rate?
• Is filtration the most important step in treating surface water?
• Which of the following is a protective measure when handling dry aluminum?
• What advantages does a Wagner block provide in filtration systems?
• How much backwash expansion of the filter media is expected?
• A mixed-media filter consists of about ________% garnet, ________% sand, and ________% coal.
• What is the significance of maintaining appropriate backwash water velocity?
• Mud balls in filters can result from what type of issues?
• Which tests are most significant for determining coagulant dosage?
• What is a common cause of low water pressure?
• What does the Langelier saturation index assess?
• How does increased sludge influence basin capacity and detention time?
• What form of measurement is Bayliss curve associated with?
• What is the purpose of the sludge blanket in a sludge blanket clarifier?
• Why is a rapid mix necessary in the coagulation process?
• What is the requirement for backwash loss of head?
• Hardness in water is primarily due to which compounds?
• What hazard is associated with powder activated carbon?
• Which treatment technique is used alongside lagooning for sludge?
• What factor, along with stirring time and intensity, is essential for proper floc formation?
• What is formed when alum or iron compounds react with alkalinity in the water?
• Is a common wall between a filter and unfiltered water allowed?
• What is the recommended expansion percentage for a mixed media filter bed during backwash?
• What fluoride level is considered moderate and beneficial for dental health?
• Which of the following describes chlorine's effect on metals when wet?
• What is the maximum allowed free chlorine or chloramine residual as a running average in surface water systems?
• What is a common consequence of filter clogging caused by mud balls?
• What is the basic formula for calculating water horsepower?
• How is detention time calculated in a water treatment basin?
• What indicates that sand is acceptable after washing with distilled water?
• What is one advantage of the sludge blanket clarifier?
• What must be considered when assessing the efficiency of a water treatment process?
• What distinguishes free chlorine from combined chlorine in terms of effectiveness?
• What is a potential consequence of creating a vacuum during tank drainage?
• In which part of the filter are clogs more likely to occur?
• What problem can arise from excessive mixing during the flocculation process?
• What is a characteristic of a Transient Noncommunity Water System?
• Which of the following is a use of chlorine in water treatment?
• What would be the best definition of temporary hardness in water?
• What does the uniformity coefficient measure in filter sand?
• What influences chemical activity/reactivity in water?
• What characteristic distinguishes fine sand from coarse sand regarding filter runs?
• Why are there fans located at the top of the chlorine (Cl2) building?
• What fluoride concentration can lead to mottling of the enamel on teeth?
• What factors are critical in determining the amount of chemical necessary for coagulation?
• When does suction head exist in a pumping system?
• Which of the following options is NOT typically monitored for water quality?
• What is the name of the high-density layer that supports the fine media in filters?
• What is the recommended action if dust or aerosols are likely to occur when handling a substance?
• Which standard must filter media meet according to the American Water Works Association?
• What is the primary function of sedimentation in water treatment?
• How are paddle, turbine, and propeller flocculators typically arranged in basins?
• Why is monitoring sand grain size important in filtration systems?
• Why is it critical to know the strength of a standard solution?
• What does direct monitoring evaluate in water treatment plants?
• What is a characteristic of carbon monoxide?
• Coagulation in water treatment is primarily what type of process?
• What is a key disadvantage of chloramines as a disinfectant?
• What detention time is required for softened water in straight-flow or up-flow settling basins according to TCEQ?
• Which type of material is filter sand recommended to be composed of?
• What process involves positive charges absorbing to negative charged particles in water treatment?
• What is the deadline for submitting required reports to the Texas Commission on Environmental Quality?
• Diatomaceous earth filter media is the fossil-like skeleton of microscopic plants called ________.
• What determines head loss in a filtration system?
• What is a disadvantage of the sludge blanket clarifier?
• What is the main objective of breakpoint chlorination?
• How do changes in floc shape and size affect sedimentation?
• Which of the following best describes thermal stratification?
• What should be the relationship between the height of troughs and sand loss during backwash?
• What does the term “floc” refer to in water treatment?
• What defines a public water system?
• Which factor does NOT influence head loss in filtration systems?
• Which of the following is not a method of monitoring coagulation, flocculation, and sedimentation?
• What tool is used to observe effects of electrical fields on charged colloids?
• What is the acceptable range for filter influent velocity?
• What pH levels are significant for both the cooper and alkalinity tests?
• What is one factor to consider about the length of filter run?
• What factors can influence sedimentation?
• There are three filter designs: gravity, pressure, and ________.
• How often must each filter's turbidimeter be able to measure turbidity?
• What determines the settings for a rate-of-flow controller?
• What is the main goal when treating a filter with chlorine?
• What is one method to ensure safety in a trench or excavation?
• During which stage of the Chlorine Demand Curve does breakpoint chlorination occur?
• What is the normal detention time for clarification in water treatment?
• What equipment should be checked for alignment and mechanical issues?
• What are the absorptive properties of powder activated carbon primarily used for?
• What should the backwash water velocity be in a filtration system?
• ________ filters are used by most plants.
• In softening plants, what type of acid is used to clean filters if they are troubled due to calcium carbonate?
• Declining rate rapid sand filters start at ________ gpm/ft2 and decline to about ________ gpm/ft2.
• What is the impact of insufficient mixing during floc formation?
• Which component is essential in the coagulation process?
• What causes the majority of underground pipe failures?
• How does chlorine disinfection effectiveness change with lower turbidity?
• In which scenario would the production of sludge be maximally reduced?
• Should filter sidewalls be smooth to avoid short-circuiting between the walls and sand?
• What substance dissolves manganese and calcium carbonate in the filtration process?
• What is considered a disadvantage of sand drying beds?
• Which of the following factors contributes to water hardness the least?
• What is the primary function of flocculators in water treatment?
• What is a basic problem encountered in sludge disposal?
• Mud balls can indicate a need for improvement in what processes?
• What is a key factor in maintaining filter efficiency?
• What does chlorine demand refer to?
• Before putting a filter into service, what is the minimum required backwashing expansion of sand?
• What happens to sediment in steeply inclined tubes?
• The quality of raw water is primarily determined by what factors?
• How many years are sludge regulations permitting sludge to be kept on site before disposal?
• What should chlorine (Cl2) residuals be in the far reaches of a water system?
• Why should underdrains be durable?
• What is the response time for notifying connected systems about water issues?
• Each filter installed after October 1, ________ must have facilities allowing filter draining without removing other filters from service.
• How does pH affect chlorine activity in water treatment?
• What type of water should be used for backwashing the filters?
• What is the minimum pH requirement for Texas drinking water treatment plants?
• What observations should be made routinely of the coagulation-flocculation process?
• True or False: Filter media must meet the AWWA standard B100-96.
• What primary characteristic do coagulants and other chemicals influence in treatment processes?
• What component of water treatment can consistently provide a high level of floc formation?
• How much chemical storage capacity is recommended for chemical storage facilities?
• Which of the following statements is true regarding sedimentation?
• What type of material may cause sand to shrink under high head loss and create cracks?
• What piece of lab equipment is suitable for transferring a specific volume of liquid reagent?
• Where are trihalomethanes (THMs) typically found within a water distribution system?
• What does calcium carbonate saturation serve as a precursor for?
• What standard must media meet according to AWWA?
• What happens if the media is too coarse?
• What tests should be done if necessary during the treatment process?
• Filtered water must meet what turbidity standards?
• What chemical is produced as a result of free chlorine interacting with water?
• What force does a centrifuge utilize to settle sludge?
• Where does the sludge cake form in a plate and frame filter press?
• What role does chlorine play in controlling biological growths in water systems?
• How does the distance of troughs above the sand relate to backwash wash water?
• Before entering a room with a chlorine leak, what is the first step that should be taken?
• What is the maximum amount of gravel required for Wheeler underdrains?
• Which type of observations should be documented daily in the coagulation process?
• What is the most common and least expensive method of handling sludge?
• What does successful control of head loss indicate about pretreatment?
• What is the minimum required detention time for straight-flow or up-flow settling basins according to TCEQ?
• What does Lime/Soda ash precipitate from water treatment processes?
• What can cause clogs in a filtration system?
• What is the primary concern with short-circuiting in flocculation basins?
• Which condition indicates a problem with filter performance?
• When selecting an optimum dosage based on jar test results, what is indicated?
• A standard solution is defined by what characteristic?
• Which of the following is NOT considered a reducing agent?
• What parameter is NOT typically evaluated during direct monitoring in water treatment?
• What types of flocculators are commonly used?
• What is formed when all chlorine demand is met?
• In addition to the required capacity, what is essential for disinfection equipment?
• How does temperature affect free chlorine residual compared to combined chlorine?
• What is an advantage of presedimentation?
• Which of the following is NOT a common test for establishing coagulant dosages?
• How is sand sized or graded?
• At what turbidity level should backwash be initiated?
• What is the maximum sustained gas withdrawal rate for 150 lbs chlorine cylinders?
• What is described by stage 1 of the Chlorine Demand Curve?
• What happens to the filter load when turbidity is removed in sedimentation?
• In surface water treatment, which element is crucial for determining the efficiency of filtration?
• What is often added to replace some of the sand in filtration systems?
• How many logs must a treatment facility maintain for cryptosporidium?
• What are the potential byproducts of free chlorine disinfection?
• Which substance can control algae at the intake of a water supply?
• Which parameters must be reported monthly to the TCEQ?
• When operating a surface water treatment plant, which laboratory test is critical for establishing chemical dosages for coagulating water?
• What effect occurs if a storage tank is drained too quickly?
• What key element affects coagulation dosage requirements?
• What occurs during the sedimentation process in water treatment?
• Which factors influence filter performance?
• What is one of the characteristics of chlorine gas?
• What is the main benefit of sedimentation in the raw water treatment process?
• What does turbidity measure in water?
• What are the most important design factors in filter systems?
• What might be a consequence of excessive head loss in a water filter?
• What is the maximum acid solubility percentage allowed for filter sand after treatment?
• Which of the following best describes the product of the reaction between coagulants and alkalinity?
• What is the minimum width for any ditch where workers are present?
• What is essential to monitor for improving coagulation effectiveness?
• At which pH does hypochlorous acid exist in 100% concentration?
• Which of the following would NOT typically cause issues in a filter bed?
• Why are diffused air flocculators often not favored?
• Which of the following is a method for sludge disposal?
• What can be inferred about filter characteristics compared to coagulation?
• How long of detention time is required for sludge blanket and solids-recirculation clarifiers at capacity flow according to TCEQ?
• Replacing about 6" of sand with 6" of anthracite coal is called ________ a filter.
• What does combined residual indicate in the chlorination process?
• What characteristic of chlorine gas makes it a strong oxidizing agent?
• What rate must be regulated by the filters in a filtration system?
• What is an important parameter to test in an upflow clarifier?
• From which part of the filter should you sample for mud balls?
• What is a benefit of using Leopold underdrains in filtration systems?
• What percentage of suspended material can a well-operated sedimentation basin remove?
• What method is used to test for alkalinity in water?
• What material is used to support the filter media in a filtration system?
• What is the purpose of the slight decline in the tubes of a horizontal settling basin?
• What are the primary functions of underdrains in a filtration system?
• What is the maximum filtration rate for rapid sand filters?
• What flow velocity should piping from flocculators to sedimentation basins achieve?
• What factors are influenced by the amount of backwash water used in filtration?
• What is meant by water stability?
• What is the defining feature of a community water system?
• The Jar Test is primarily used to determine what?
• A facility is required to log what for virus control?
• What is the purpose of pre-chlorination in sludge treatment?
• Facilities serving how many people must continuously monitor filter effluent turbidity?
• What responsibility do employers have under the Hazard Communication Act?
• What is a key characteristic of Chlorine Dioxide?
• Which of the following contributes to the amount of filtered water quantity?
• What requirement must plants with a capacity greater than 30 million gallons per day meet regarding flocculation equipment?
• What is the minimum length of a straight-flow basin compared to its width?
• What types of filters are categorized under high pressure?
• In a water purification process, what is the immediate result of coagulation?
• What defines a public water system?
• What is the recommended detention time for flocculation and softening?
• What is formed when a coagulant reacts with alkalinity in the raw water?
• What role do oxidation agents play as coagulant aids?
• Approximately what percentage of confined space deaths occur?
• Which aspect of filtering is directly affected by the amount of backwash water used?
• In context of sedimentation, what does the term "detention time" refer to?
• What is an example of a coagulant aid?
• How much of the training program must employees participate in, according to employer responsibilities?
• What is a key expectation when starting a safety policy?
• When free Cl2 is added to water, which acid is stronger?
• A mixed media filter is often called an ________ filter.
• What safety measure should be taken when storing 150 lbs chlorine cylinders?
• What is NOT a factor in the settling process of particles in water?
• If a customer complains about low water pressure, what should the operator do?
• What is the primary purpose of filtration in water treatment?
• Which type of pump is most commonly used in solution pumping for water treatment?
• What is the purpose of flocculation in water treatment?
• What term describes the time water stays in a basin?
• Which of the following compounds is NOT a fluoride compound commonly added to water supplies?
• What types of chlorine are commonly used in water treatment?
• Filtering material must conform to what standards?
• Which personal protective equipment is essential when working with hazardous chemicals?
• What measurement device do systems serving more than 10,000 people use to monitor turbidity?
• How often should the jar test be used?
• What occurs to dissolved solids when they come into contact with chlorine?
• What substance is commonly adsorbed by activated carbon due to its properties?
• Water with high amounts of color coagulates better at which pH level?
• What is considered an acute violation time frame?
• Due to its density and particle shape, what material has filtration characteristics similar to activated carbon?
• How often must turbidity readings be recorded for systems serving more than 10,000 people?
• How does a shallow depth (tube) settling basin affect detention time?
• If the alkalinity is equal to or greater than the total hardness, what type of hardness is present?
• Which system receives the ultrasonic signals that measure filter water levels?
• What is the best method for oxidizing taste, odor, color, iron, manganese, or organics in water?
• What are the lake levels/zones, starting from the top layer?
• How does chlorine act in water with a pH of 7?
• Where should channeling or improper flow patterns be checked in the basin?
• Does a Nontransient Noncommunity Water System require a licensed operator?
• One of the main advantages of a free chlorine disinfection system is:
• What is designed for flow to enter a circular weir in a peripheral-feed basin?
• Should filter box depth accommodate underdrains, gravel, sand, and a water depth of 10 to 12 feet?
• What primarily causes turbidity in water?
• How does tuberculation affect a pipe's C factor?
• Is routine inspection of a filter bed considered part of a maintenance program?
• What can cause a change in the gradient line of a water treatment system?
• What is the minimum capacity requirement for disinfection equipment in a treatment plant?
• What does mixing cause in the context of water treatment?
• When should a boil water notification be applied?
• What effect does temperature have on chlorine effectiveness?
• Is temperature the most important factor for effective coagulation?
• What happens when the stratification layers of a lake mix?
• What velocity must be maintained to prevent floc settling in a wastewater collection system?
• What consequence can occur if troughs are not set adequately?
• Which of the following are common coagulants used in water treatment?
• If an employee does not follow safety rules, what should the employer do?
• Before changing feed rates or flocculation intensity, which parameters should be determined?
• What is the primary cause of filter bed trouble known as mud balls?
• What is the primary function of polyelectrolytes in water treatment?
• What is required to be stored at a water treatment plant for at least a 15-day supply?
• What primarily causes hardness in water?
• What is the first step in starting a safety program?
• What does Net Positive Suction Head (NPSH) refer to?
• What is lagooning primarily considered in the context of sludge processing?
• How does a center-feed basin operate?
• What is the purpose of flocculation in water treatment?
• What happens if troughs are not level and at the same elevation during operation?
• Which process is most commonly associated with demineralization of water?
• What is required for troughs to prevent short-circuiting during backwash?
• Which factor has a greater impact on filter performance?
• What must wash water lines be capable of doing in a filtration system?
• What zones does a settling basin have?
• What is the effect of operational knowledge on the functionality of a sludge blanket clarifier?
• As turbidity levels decrease, what becomes more effective?
• How many pounds of dry sludge are produced for each pound of dry lime added?
• How do flocculators impact bacteria levels in water?
• What are the types of violations related to water quality?
• Which of the following is considered excessive during the mixing process?
• What happens to coagulants in water with high pH levels?
• What is considered the best form of sludge disposal?
• What is the primary purpose of Chlorine Dioxide in water treatment?
• What is the primary role of copper sulfate in water treatment?
• How many pounds of calcium hypochlorite are needed for every 100 square feet of filter?
• What dosage of coagulant is required for very fine suspended solids?
• What is the primary purpose of a filter surface wash?
• How may coagulant aids be classified?
• What is a potential result of cavitation in a pump?
• Flocculation serves what main purpose in water treatment?
• How is the correct coagulant dosage typically determined?
• Should underdrains collect filtered water uniformly and with low head loss?
• What type of water system is an example of a mobile home park?
• Which of the following is a type of waterborne pathogen?
• Aeration in water treatment is primarily used to remove what substances?
• Which of the following is an example of a Nontransient Noncommunity Water System?
• What is the minimum free chlorine residual required at the far reaches of a water system?
• Chlorine cylinders are equipped with what safety feature to prevent gas leaks at extreme temperatures?
• What should be available in work areas where chemicals are handled?
• What is a standard solution?
• What do the quality and quantity of chemical solids depend on?
• Coagulation is primarily categorized as which type of reaction?
• What effect does increased velocity have on sedimentation in basins?
• Which of the following oxidants is considered an aid in coagulation?
• Which of the following statements about filtration is true?
• What is the recommended chlorine dosage and contact time before a new filter is placed into service?
• When injecting chlorine into finished water, what is the goal?
• What is the standard pressure for testing a new line?
• Why is media hardness important in filtration?
• What process controls the decomposition of certain sludges?
• What safety feature should be installed in basins and walkways?
• An operator hears pinging in the pump. What is causing this noise?
• What does head loss in a filtration system refer to?
• What is a common feature of the thermocline layer in lakes?
• Which of the following is a disadvantage of using combined chlorine (chloramines)?
• Which of the following is not a method used for chlorine application?
• What is a consequence of clogs during filtration?
• What effect does increasing the temperature have on the coagulation process?
• Which of the following is NOT a safety standard for chlorine storage buildings?
• Which statement is true regarding folded-plate stainless underdrains?
• What is the primary method utilized as backflow prevention for drinking water?
• What is primarily assessed to ensure proper filtration in a treatment facility?
• What method is typically used to remove fluoride from water?