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Distribution 1/2 Quiz 1

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Created September 2018
Joe Jorgensen
Quiz by Joe Jorgensen, updated more than 1 year ago
Joe Jorgensen
Created by Joe Jorgensen almost 6 years ago
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Resource summary

Question 1

Question
Chief operators never use past records to adjust treatment processes.
Answer
  • True
  • False

Question 2

Question
All water comes in the form of precipitation.
Answer
  • True
  • False

Question 3

Question
Many organisms that cause disease in humans originate with the fecal discharges of infected individuals.
Answer
  • True
  • False

Question 4

Question
Rain water is pure
Answer
  • True
  • False

Question 5

Question
Groundwater is high in dissolved oxygen
Answer
  • True
  • False

Question 6

Question
The impact of a contaminant on surface water depends on the receiving water’s ability to assimilate contaminant
Answer
  • True
  • False

Question 7

Question
An Oligotrophic lake has low nutrient content.
Answer
  • True
  • False

Question 8

Question
reatment plant operators do not need to keep informed of local, state and federal regulations.
Answer
  • True
  • False

Question 9

Question
Local conditions have an influence on methods of managing lakes and reservoirs used for domestic water supplies.
Answer
  • True
  • False

Question 10

Question
Precipitation is high in bacterial count.
Answer
  • True
  • False

Question 11

Question
Color in water is objectionable mainly from the standpoint of health.
Answer
  • True
  • False

Question 12

Question
The specific disease-producing organisms present in water are hard to identify
Answer
  • True
  • False

Question 13

Question
Temperature has no impact on the effectiveness of copper sulfate
Answer
  • True
  • False

Question 14

Question
Excessive Nitrate in drinking water can lead to cancer
Answer
  • True
  • False

Question 15

Question
The Interim Enhanced Surface Water Treatment Rule does not address Cryptosporidium.
Answer
  • True
  • False

Question 16

Question
Measuring biological oxygen demand can be used to indirectly measure the organic content of the water
Answer
  • True
  • False

Question 17

Question
The State’s regulatory program can be less stringent than the US EPA’s program.
Answer
  • True
  • False

Question 18

Question
Primary drinking water standards are not mandatory standards.
Answer
  • True
  • False

Question 19

Question
Stratification develops when a warm layer of water overlies a colder layer
Answer
  • True
  • False

Question 20

Question
Under the Total Coliform Rule the MCL is violated if 5% of the samples collected in a month are total coliform positive.
Answer
  • True
  • False

Question 21

Question
Porosity is the volume of space in a given amount of material.
Answer
  • True
  • False

Question 22

Question
Drawdown is the water level in a well when the pump is on moving water.
Answer
  • True
  • False

Question 23

Question
Suspended matter has little or no effect on copper sulfate treatment.
Answer
  • True
  • False

Question 24

Question
There is no minimum requirement for distribution chlorine residual under the SWTR.
Answer
  • True
  • False

Question 25

Question
The turbidity requirement under the Interim Enhanced Surface Water Treatment rule is <0.3 NTU
Answer
  • True
  • False

Question 26

Question
The ________ is the continuous exchange of water between the earth and the atmosphere.
Answer
  • Hydropneumatic cycle
  • Life cycle
  • Hydraulic gradient
  • Hydrologic cycle

Question 27

Question
What is the purpose of a water treatment plant?
Answer
  • To produce safe and pleasant drinking water
  • To produce water containing toxic substances
  • To produce water transmitting disease-causing organisms
  • To produce water with agreeable taste, odor or appearance

Question 28

Question
What does the size of a water treatment plant depend upon?
Answer
  • The water supply
  • Impurities in the water
  • Regulatory Factors
  • All of the above

Question 29

Question
All of the following factors influence the concentration of copper sulfate needed for effective control of algae blooms except?
Answer
  • Alkalinity
  • Water pH
  • Septic tanks
  • Water temperature

Question 30

Question
What is the purpose of the chemical coagulation process?
Answer
  • Cause very fine particles to clump together into larger particles
  • Filter out remaining suspended particles
  • Kill disease-causing organisms
  • Settle out larger suspended particles

Question 31

Question
Which constituent is not a chemical contaminant?
Answer
  • Inorganic
  • Volatile Organic
  • Synthetic Organic
  • Bacteria

Question 32

Question
A water-bearing geological formation is referred to as a(n)?
Answer
  • Aquifer
  • Aquarium
  • Water table
  • Bed rock

Question 33

Question
A 4 log removal rate is equal to what percent?
Answer
  • 90
  • 99
  • 99.9
  • 99.99

Question 34

Question
Whenever a chemical algae control program is started, when should monitoring be performed?
Answer
  • Before, during and after use of chemicals
  • Before visits by regulatory agencies
  • When staff are available
  • Whenever results are needed for analysis

Question 35

Question
Plants give off water vapor to the atmosphere through a process called?
Answer
  • Percolation
  • Evaporation
  • Transpiration
  • All of the Above

Question 36

Question
Organic matter combined with chlorine can create?
Answer
  • Septic Conditions
  • Trihalomethane's
  • Acidic water unfit for human consumption
  • Legionella

Question 37

Question
Which of the following does not influence surface runoff?
Answer
  • Rainfall intensity
  • Soil composition
  • Mineral content of the water
  • Vegetation covering the ground

Question 38

Question
Surface water runoff such as creeks and rivers collect water from an area of land towards one primary water course and is known as the?
Answer
  • Contributory
  • Pooling area
  • Watershed
  • Canyon

Question 39

Question
When using a river or stream as a water supply, what is a major concern?
Answer
  • Downstream usage
  • Spawning conditions
  • Groundwater quality
  • Upstream conditions

Question 40

Question
The area outward from the center of a well that is affected during pumping is called the?
Answer
  • Radius of influence
  • Zone of saturation
  • Water table
  • Impervious section

Question 41

Question
The Surface Water Treatment Rule requires the ________ and ________ of Giardia
Answer
  • Coagulation and sedimentation
  • Removal and inactivation
  • Disinfection and flocculation
  • Coagulation and disinfection

Question 42

Question
A direct filtration water treatment plant does not include?
Answer
  • Coagulation
  • Sedimentation
  • Filtration
  • Flocculation

Question 43

Question
What is the major type of problem caused by waste water contamination of a domestic water supply?
Answer
  • Loss of reservoir capacity
  • Scouring
  • Siltration
  • Nutrient loading

Question 44

Question
Why must operators constantly monitor raw water quality in a river?
Answer
  • To detect sudden pollutant loads
  • To inform the public in Consumer Confidence Reports
  • To justify lab workload and budget
  • To notify wastewater treatment plant operators

Question 45

Question
What are the primary responsibilities of Water Treatment Operators?
Answer
  • Produce pleasant drinking water
  • Produce safe drinking water
  • Protect health and well-being of the community
  • All of the above

Question 46

Question
Which is not a trophic state of a lake?
Answer
  • Oligotrophic
  • Endotrophic
  • Mesotrophic
  • Eutrophic

Question 47

Question
A disinfected water supply is one in which
Answer
  • All bacteria and viruses have been sterilized
  • All algae have been destroyed
  • All pathogenic organisms have been inactivated or destroyed
  • All of the above

Question 48

Question
Which of the following is not considered a point source discharge?
Answer
  • Wastewater discharge
  • Mine drainage
  • Storm water runoff
  • Industrial discharges

Question 49

Question
Which of the following is not a characteristic of Surface water?
Answer
  • Variable composition
  • High turbidity
  • Low dissolved oxygen
  • Low iron and manganese

Question 50

Question
What are the typical duties of Water treatment Operators?
Answer
  • Operate process equipment
  • Calibrate and maintain chemical dosages and applications
  • Maintain accurate records of operational data
  • All of the above

Question 51

Question
Drinking water standards are usually categorized as being related to either _______ or ________.
Answer
  • Drinkable / Non-Drinkable
  • Surface supplies / Ground supplies
  • Health / Aesthetics
  • Taste / Odor

Question 52

Question
Which is not a layer in a stratified lake?
Answer
  • Hydrolimnion
  • Mesolimnion
  • Hypolimnion
  • Epilimnion

Question 53

Question
The number of water samples that must be collected each month in a water distribution system is based on?
Answer
  • The size of the population served
  • The type of treatment given to the water
  • The source of the water
  • The size of the water mains

Question 54

Question
A system whose number of customers exceeds 25 and are full time residents would be categorized as a?
Answer
  • Non-transient, non-community water system
  • Community public water system
  • Potable water system
  • Transient water system

Question 55

Question
As a relate of algae blooms, what happens to organic matter within water supply reservoirs
Answer
  • Constant
  • Decrease
  • Increase
  • Unpredictable

Question 56

Question
In determining the purity of a water sample, it is usually tested for the presence of coliform bacteria because ____________.
Answer
  • It can be detected using a microscope
  • It can be done in the field
  • It is one of the disease-bearing bacteria
  • Its presence may indicate that the water has been contaminated

Question 57

Question
What is an example of a non-transient non-community water system?
Answer
  • Campground
  • Restaurant
  • School
  • Service station

Question 58

Question
The EPA has imposed drinking water regulations that cover many contaminants including?
Answer
  • General physical and general mineral characteristics
  • Organics, inorganic, and volatile organic compounds (VOCs)
  • Bacteriological and radiological characteristics
  • All of the above

Question 59

Question
Water has its greatest density at?
Answer
  • 40 degrees F
  • 29 degrees F
  • 39 degrees F
  • 35 degrees F

Question 60

Question
Which is not a bacterium?
Answer
  • Total Coliform
  • Giardia
  • E. Coli
  • Legionella

Question 61

Question
How do nutrients cause water quality problems in domestic water supply
Answer
  • Cause pathogen regrowth
  • Coagulate suspended particles
  • Stimulate growth of algae
  • Toxic to aquatic life

Question 62

Question
Methemoglobinemia is caused by?
Answer
  • Cancer
  • Giardia
  • Flouride
  • Nitrate

Question 63

Question
The "Total Coliform Rule" of the SDWA regulations requires the result of coliform testing to be given as?
Answer
  • MPN
  • Colony forming units (CFUs)
  • mg/l
  • Presence / Absence

Question 64

Question
The first time a distribution water sample is returned with a "positive" test result, one should?
Answer
  • Take another sample from the same location and other designated locations
  • Notify the public to boil the water
  • Take a sample from the source
  • Increase the chlorine dosage

Question 65

Question
Water shed protection does not include protective measures against?
Answer
  • Boating
  • Ice cutting
  • Clear cutting
  • Landfills

Question 66

Question
The algae that causes most of the problems in Southern California's lakes is called?
Answer
  • Blue-Green
  • Green
  • Diatoms
  • Oscillatoria Curviceps

Question 67

Question
Which is not a characteristic of an Oligotrophic lake?
Answer
  • Low nutrient content
  • Sediment accumulation on lake bottom
  • Little planktonic growth
  • Few aquatic plants

Question 68

Question
Which activity is the US Environmental Protection Agency (USEPA) not responsible for?
Answer
  • Writing water legislation
  • Setting maximum contaminant levels
  • Delegating primary enforcement duties to states
  • Monitors state activities

Question 69

Question
What is a potential cause of objectionable tastes and odor in a domestic water supply
Answer
  • Algae blooms
  • Birds
  • Coliforms
  • Hardness

Question 70

Question
What is the primary purpose of vegetation removal in areas where new reservoirs are to be formed?
Answer
  • To control potential fire hazard during filling
  • To create additional storage space
  • To eliminate causes of accidents to recreational users
  • To reduce the organic and nutrient loading in the reservoir

Question 71

Question
A water system must give a Tier 1 public notice for?
Answer
  • A violation of MCL for VOC's and SOC's
  • A violation of Total Coliform MCL
  • A failure to monitor
  • Failing to comply with variance or exemption

Question 72

Question
Which outcome is not a result of de-stratification and re-aeration?
Answer
  • Improved water quality
  • Reduced anaerobic conditions
  • Reduced turn-over events
  • Reduced recreational value

Question 73

Question
The surface water treatment rule requires which removal rate for giardia?
Answer
  • 2 log
  • 4 log
  • 1 log
  • 3 log

Question 74

Question
The Interim Enhanced Surface Water Treatment Rule requires the maintenance of a minimum distribution chlorine residual of?
Answer
  • 0.2 mg/l
  • 1.0 mg/l
  • 2.0 mg/l
  • 4.0 mg/l

Question 75

Question
Which item did the 1974 Safe Drinking Water Act not establish?
Answer
  • Primary Drinking water regulations
  • Monitoring of chemical and microbiological contaminants
  • Enforceable standards
  • Standards for chemical analysis

Question 76

Question
If algae blooms are a problem the operating agency should develop capabilities for obtaining what types of information?
Answer
  • Extent of algae blooms
  • Taste and odor conditions related to algae blooms
  • Water quality problems that develop as a result of the blooms
  • All of the above

Question 77

Question
The effectiveness of copper sulfate treatment is affected by?
Answer
  • Alkalinity
  • Suspended matter
  • Temperature
  • All of the above

Question 78

Question
What problems may be created for operators by algae blooms in domestic water supply reservoirs?
Answer
  • Increased hardness
  • Decreased carbon dioxide
  • Staining of clothes
  • Increased pH which reduces chlorination efficiency

Question 79

Question
Additional bacteriological monitoring must be conducted?
Answer
  • After construction of wells
  • After main installation or repair
  • After construction, repair or maintenance of storage facilities
  • All of the above

Question 80

Question
Algae blooms in lakes and reservoirs can be controlled by?
Answer
  • Adding nutrients
  • Reducing oxygen
  • Chemical methods
  • Shortening filter runs

Question 81

Question
The area in a lake where there is sufficient light and nutrients to cause aquatic growth is called the?
Answer
  • Littoral zone
  • Limnetic zone
  • Terrestrial zone
  • Benthic zone

Question 82

Question
The inactivation of pathogenic organisms is called?
Answer
  • Sterilization
  • Oxidation
  • Pasteurization
  • Disinfection

Question 83

Question
A change in the pH in a reservoir between the daytime and the night time is cause by?
Answer
  • Algae consuming CO2 during the day and releasing CO2 at nigh
  • Algae releasing CO2 during the day and consuming CO2 at night
  • The overfeeding of coffer sulfate
  • The decomposition of inorganic material

Question 84

Question
Which is not a major contributor of Nitrate contamination in groundwater?
Answer
  • Leaching from septic systems
  • Underground fuel tanks
  • Agriculture fertilizers
  • Livestock activities

Question 85

Question
Alkalinity can be defined as?
Answer
  • A measurement of the basic state of water
  • A measurement of the ability of water to buffer against changes in pH
  • A measurement of the amount of acid in the water
  • A measurement of the amount of hydrogen ions in the water

Question 86

Question
A treatment plant can be defined as?
Answer
  • Any process or set of processes that effect the physical, chemical or biological characteristics of water
  • Only those processes that constitute conventional water treatment
  • A place where operators can catch up on their sleep
  • Any process or set of processes that effect the biological characteristics of water

Question 87

Question
State Drinking Water Regulations can be found in?
Answer
  • 40 CFR part 141-149
  • Title 17 of the Code of State Regulations
  • Title 28 of the California Code of State Regulations
  • Title 22 of the California Code of State Regulations

Question 88

Question
Turbidity is the measurement of?
Answer
  • The concentration of bacteria in the water
  • The color of water measured in CFU
  • A measurement of inorganic material in the water
  • The amount of particulate material in the water

Question 89

Question
Compliance sampling must be reported to state by?
Answer
  • The 10th day of following month
  • Within 24 days
  • By the end of the month
  • Within 30 days

Question 90

Question
The zone in a lake that is considered "open water" is the?
Answer
  • Benthic Zone
  • Limentic Zone
  • Littoral Zone
  • Auto Zone

Question 91

Question
What is the volume in cubic feet of a circular clarifier 8 feet deep and 40 feet in diameter?
Answer
  • 10,048 ft3
  • 15,162 ft3
  • 17,038 ft3
  • 19,625 ft3
  • 22,608 ft3

Question 92

Question
What is the volume in gallons of a rectangular settling basin 8 feet deep, 12 feet wide, 50 feet long?
Answer
  • 47, 672 gallons
  • 35, 904 gallons
  • 43,084 gallons
  • 44,808 gallons
  • 4,800 gallons

Question 93

Question
How many pounds of copper sulfate will be needed to dose a reservoir with 0.6 mg/l copper? The reservoir volume is 20 million gallons. The copper sulfate is 25% copper. Assume the alkalinity of 40 mg/l.
Answer
  • 100 lbs.
  • 400 lbs.
  • 800 lbs.
  • 1,200 lbs.
  • 1,334 lbs.

Question 94

Question
A reservoir has an average length of 1196 ft and an average width of 961 ft, the alkalinity is 175 mg/l. How many pounds of CuSO4 is needed?
Answer
  • 6 lbs.
  • 18 lbs.
  • 20 lbs.
  • 50 lbs.
  • 143 lbs.
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