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AQUATIC FACILITY OPERATOR FINAL PAPER
2026 FULL STUDY GUIDE
โ Public water system is a system that serves a population of ___ or more regularly. Answer: 25 โ Maximum total chlorine residual ___ mg/l. Answer: 4 โ What type of contaminant is Iron. Answer: Secondary โ Primary contaminant is sometimes added to water supplies to prevent tooth decay. Answer: Fluoride โ The Failure of a public water system to comply with the NM Drinking Water Regulations must be reported to NMED within ___ hours. Answer: 48 โ MCL for Total Trihalomethanes ___ mg/l. Answer: 0. โ SDWA sampling results must be reported to. Answer: New Mexico Enviroment Department (NMED)
โ Ground water systems must sample for inorganic chemicals every ___ years. Answer: 3 โ The SDWA Compliance Cycle for Standardized Monitoring Rule consists of ___ Compliance Periods. Answer: 3 โ ___ or less than 5% bacteriological samples must be taken every month before a system is allowed to have TWO positive samples without violating the drinking water standard?. Answer: 40 โ Action level for Lead ___ mg/l. Answer: 0. โ If Bacteriological retakes are done this month what is the minimum number of samples that must be turned in next month?. Answer: 5 โ if a 3-log removal is required for Giardia Lamblia what percentage of organisms can survive and still meet requirements. Answer: 0. โ Primary Inorganic Contaminant poses an immediate health risk. Answer: Nitrates โ The Presence of Nitrates in the bloodstream that reduces oxygen uptake that gives the skin a blue tint. Answer: Blue Baby Syndrome
โ Number is used to determine how many Bac-t samples must be taken. Answer: People served โ Minimum number of Bac-T samples required each month?. Answer: 1 โ Anytime the MCL is exceeded and fecal coliform positive results come back from any of the samples. Answer: Non-acute violation โ If retakes are required this month what is the minimum number of samples required next month. Answer: 5 โ Bacteria that are found only in surface water supplies. Answer: Cryptosporidium & Giardia โ How soon must NMED be notified that a Bacterial MCL has been exceeded? ___ hours. Answer: 24 โ Coliform group. Answer: Indicator organism โ Waterborne pathogens found in all water supplies. Answer: Typhoid, Cholera, Dysentery, Hepatitis, Paratyphoid (types A & B) โ Disease causing Bacteria. Answer: Pathogens
โ Water. Answer: Universal solvent โ Ground & Surface. Answer: Two sources of water โ Water that is safe to drink. Answer: Potable โ Natural water cycle. Answer: Hydrologic Cycle โ Water that is lost or given up to the atmosphere by plants or the surface of streams, lakes and oceans.. Answer: Evapotranspiration โ Destruction of Pathogens. Answer: Disinfection โ May be used for the removal of Iron & Manganese, some kinds of Taste & Odors, and some dissolved gases, such as Ammonia and Hydrogen Sulfide. Answer: Chlorine โ Byprouducts of drinking water chlorination. these byprouducts form when chlorine reacts with dissolved natural organic matter, moslty plant life. Answer: Trihalomethanes
โ To keep Chlorine cylinders from rupturing from gas expanding. Chlorine rooms be kept below ___ F degrees. Answer: 120 โ Keep the chlorine gas forming Chlorine Hydrate also know as "GREEN ICE". Chlorine room be kept above ___ F degrees?. Answer: 60 โ Prevent Chlorine cylinders from rupturing when gets too hot. Answer: Fusible Plugs โ At what temperature does the designed fusible plugs melt? ___ F. Answer: 157 โ Why is Fluoride added to drinking water?. Answer: Prevent tooth decay โ Chemicals used as sources of fluoride. Answer: Sodium silicofluoride and hydrofluorosilic acid โ Optimum concentration of fluoride in water. ___ mg/l. Answer: 0.
โ Factor is used to determine the optimum dosage of fluoride. Answer: Air temperature
โ Liquid fluoride. Answer: Hydrofluorosilicic acid โ If a system adds fluoride, fluoride testing should occur. Answer: Daily โ Why is fluoride an Inorganic Primary Contaminant. Answer: Causes harder more brittle bones โ Equipment used to feed liquid fluoride or liquid chlorine. Answer: Positive displacement diaphragm metering pumps โ Percentage unaccounted for water become excessive?. Answer: 10 โ Located where the service is attached to the main. Answer: Corporation stop โ Type of valve is best suited for throttling flows. Answer: Butterfly Valve โ Under registers and records less water than actually used. Answer: Worn meter
โ Two means of determining the chemical stability of water. Answer: Baylis Curve and Calcium Carbonate Stability Test (Marble Test) โ Production of mounds of rust on the inside of the pipe. Answer: Tuberculation โ Type of pipe is not affected by corrosive water. Answer: PVC (Polyvinyl Chloride) โ Most common type of residential meter. Answer: Positive displacement meter โ Wet barrel and dry barrel. Answer: Two types of fire hydrants โ Should be done before you excavate to make a repair. Answer: Contact NMOC (New Mexico One Call), by phone, dial 811. โ Mineral Contaminants. Answer: Iron, Manganese, Carbon Dioxide, Hydro Sulfide โ Turbidity Contaminants. Answer: Silt & Clay, Suspended Matter That will not readily settle
โ Most Turbidity carry a negative charge causing a electro-chemical repulsion called. Answer: Zeta Potential โ Inorganic contaminants. Answer: Lead, Mercury, Nitrate, Nitrite, Selenium, Arsenic, Radionuclides โ Organic contaminants. Answer: Pesticides, Herbicides, Synthetic Organic Chemicals, Volatile Organic Chemicals โ Microbiological contaminants. Answer: Bacteria, Virus & Protozoa โ Radiological Contaminants. Answer: Natural or man made sources of Radiation โ A physical & Chemical reaction occurring which results in the formation of insoluable solids (Floc) which settles. Answer: Coagulation โ Violations for Chemical/s Must be reported in ___ days. Answer: 7 โ Violations for Radiological must be reported in ___ hours. Answer: 48 โ Sanitary survey records must be kept ___ years. Answer: 10
โ An attachment to the well casing to provide a sanitary seal between the well casing and the effluent line. Answer: Pitless adapter โ Height a centrifugal pump can theoretically push water ___ feet. Answer: 33. โ Scale forming substance in water. Answer: Calcium carbonate โ Nuetral pH. Answer: 7 โ Minimum velocity to flush distribution system. ___ fps. Answer: 2. โ Regulation minimum design pressure in distribution system. ___ psi. Answer: 30 โ Physical link between a potable water system and one of unknown quality. Answer: Cross connection โ DPD test is for. Answer: Chlorine analysis โ Protects against backsiphonage and backflow. Answer: Reduced pressure zone assembly
โ Should be representative of the system. Answer: Bacti samples โ Hours to analyze bacti samples.. Answer: 30 โ Positive bacti resampling must take place. Answer: Original location, one upstream and one downstream โ Repeat bacti samples must be collected within ___ hours. Answer: 24 โ Chlorine gas is _____ times heavier than air.. Answer: 2. โ MCL for iron. ___ mg/l. Answer: 0. โ Minimum residual pressure in a distribution system without public notification is ___ psi. Answer: 20 โ Dissimilar metals reacting to each other in an aqueous solution. Answer: Galvanic corrosion โ Water needed for a bacti sample. ___ ml. Answer: 100
โ Taken from customers taps after plumbing has been flushed with fresh water from the distribution system. Answer: Microbiological samples โ Disinfection by-products samples are taken from?. Answer: Distribution system โ Lead and copper samples are taken from?. Answer: Point of use sites draw directly from customers plumbing fixtures โ Lead and copper samples are taken after water has not been in use for ___ hours. Answer: 6 - 8 โ Why must Drinking water distribution system sampling plans be developed. Answer: Make sure samples are taken from the appropriate locations within the system โ May require moving locations each month in order to properly cover the entire system over time. Answer: Microbiological samples โ Commonly found in the environment (soil, vegetation) and are generally harmless. Answer: Coliform bacteria
โ What are the 3 parts of a site sampling plan. Answer: Microbiological samples, disinfection by-products samples, lead and copper samples โ Drinking water distribution system sampling plans must be reviewed and approved by?. Answer: NMED-DWB โ What type of sample is a lead and copper sample. Answer: POU โ The only reusable sample bottles. Answer: Nalgene โ Found in the intestinal tract of warm blooded animals and humans. Answer: Coliform bacteria โ These bottles are clear plastic disposable container that are supplied by the manufacturer with the colilert testing kits. Answer: IDEXX โ If coliform bacteria are present in the water supply ___ may be present. Answer: Pathogens โ These bottles have a hinged cap that has a snap on type seal and a hinged latch to secure it also come with a plastic key. Answer: Snap Lid bottle
โ It is important to take compliance sample at the beginning of the week incase. Answer: Repeat samples are needed โ Radiological violation records must be kept ___ years.. Answer: 10 โ Chemical violation records must be kept ___ years. Answer: 10 โ All vents and overflows on a storage tank should be. Answer: Screened โ If a single chlorine cylinder freezes. Answer: Feed Rate is too high โ Prevents water passing from the high pressure side back to the suction side and recirculate through the impeller again.. Answer: Wear rings โ What would a dial indicator be used for. Answer: Measuring shaft misalignment โ Connect a motor to a pump using. Answer: Coupling โ A good application for a peristaltic pump. Answer: Chemical feed pump
โ Component in a diaphragm pump causes the most maintenance problems. Answer: Check valves โ Can be used as an initial check of coupling alignment. Answer: Straight edge โ The distance from the well to the edge of the cone of depression. Answer: Radius of influence โ If the drawdown increases. Answer: Screen is becoming clogged โ Type of algae will cause problems by clogging the filter bed. Answer: Diatoms โ Chemical used to kill algae in a lake. Answer: Copper sulphate โ Ladders must extend at least ___ feet above the trench?. Answer: 3 โ Chlorine is ___ times heavier than water. Answer: 1. โ Gate valves have ___ turns per inch. Answer: 3
