Water nuggets exam prep || with Error-free Answers.
What is potassium permanganate most effective in? correct answers Removing iron
A total coliform positive sample must be tested for the presence of? correct answers Fecal
Coliforms (E.coli)
A change in the water elevation from the normal level to the pumping level is? correct answers
drawdown
What type of self-contained breathing apparatus should be used at water plants? correct answers
positive pressure
What type of water violation requires an all clear notification be given to the public? correct
answers Tier 1
The fusible metal plugs on chlorine containers are designed to melt at what temperatures? correct
answers 158 - 165 degrees Fahrenheit
What percentage of solids sludge is produced in the precipitative softening plant? correct
answers 5%
What type of algae would most likely be found in nutrient rich water? correct answers blue-green
algae
The loss of chloramine residuals in a water line or a storage tank is due to? correct answers
Nitrification and an increase in heterotrophic bacteria levels
, What adjustments will the operator of a surface water treatment plant have to make if the raw
water is very high in turbidity levels? correct answers Use the Maximum Flocculator Paddle
Speed Setting
When 0.3 mg/L chlorine is added to water, the residual will increase by 0.3 mg/L. correct
answers True
What tests are performed most frequently in drinking water systems? correct answers Turbidity
and coliform bacteria
Shellfish grown in polluted waters have been known to contain the organism that causes
infectious hepatitis. correct answers True
What is the main purpose for adding coagulant chemicals to raw water? correct answers To
destabilize colloidal particles
What is the depression around the well of the water surface caused by pumping water from a
well? correct answers Come of depression
Most totalizer meters at treatment plants are commonly correct answers Venturi
The organism that causes Giardiasis correct answers Are best controlled by filtration followed by
disinfection
The temperature range at which coliform bacteria samples must be stored before being delivered
to a lab is? correct answers 4-10 degrees Celsius
Where does most of the carbon dioxide in groundwater originate from? correct answers
Biological oxidation of organic matter
What is potassium permanganate most effective in? correct answers Removing iron
A total coliform positive sample must be tested for the presence of? correct answers Fecal
Coliforms (E.coli)
A change in the water elevation from the normal level to the pumping level is? correct answers
drawdown
What type of self-contained breathing apparatus should be used at water plants? correct answers
positive pressure
What type of water violation requires an all clear notification be given to the public? correct
answers Tier 1
The fusible metal plugs on chlorine containers are designed to melt at what temperatures? correct
answers 158 - 165 degrees Fahrenheit
What percentage of solids sludge is produced in the precipitative softening plant? correct
answers 5%
What type of algae would most likely be found in nutrient rich water? correct answers blue-green
algae
The loss of chloramine residuals in a water line or a storage tank is due to? correct answers
Nitrification and an increase in heterotrophic bacteria levels
, What adjustments will the operator of a surface water treatment plant have to make if the raw
water is very high in turbidity levels? correct answers Use the Maximum Flocculator Paddle
Speed Setting
When 0.3 mg/L chlorine is added to water, the residual will increase by 0.3 mg/L. correct
answers True
What tests are performed most frequently in drinking water systems? correct answers Turbidity
and coliform bacteria
Shellfish grown in polluted waters have been known to contain the organism that causes
infectious hepatitis. correct answers True
What is the main purpose for adding coagulant chemicals to raw water? correct answers To
destabilize colloidal particles
What is the depression around the well of the water surface caused by pumping water from a
well? correct answers Come of depression
Most totalizer meters at treatment plants are commonly correct answers Venturi
The organism that causes Giardiasis correct answers Are best controlled by filtration followed by
disinfection
The temperature range at which coliform bacteria samples must be stored before being delivered
to a lab is? correct answers 4-10 degrees Celsius
Where does most of the carbon dioxide in groundwater originate from? correct answers
Biological oxidation of organic matter
