Class A Water Operator: Questions With Verified
Solutions
How many Training Hours and experience for a class D Water Operator
Right Ans - 16 Hours Training and No Experience
How many Training Hours and experience for a class C Water Operator
Right Ans - 36 Hours Training and 1 year Experience
How many Training Hours and experience for a class B Water Operator
Right Ans - 100 Hours Training and 3 years Experience (must include 1 year
of hands on experience)
How many Training Hours and experience for a class A Water Operator
Right Ans - 200 Hours Training and 5 years Experience (must include 2 years
of hands on experience)
How many Training Hours and experience for a Class C Lab Operator Right
Ans - 32 Hours and no experience
How many Training Hours and experience for a Class B Lab Operator Right
Ans - 32 hours of C and 32 hours of B and 6 months experience. ***associate in
science can substitute 32hrs of C level training
How many Training Hours and experience for a Class A Lab Operator Right
Ans - 32 hours of B and 1 year experience. ***Must include a Bachelor in
science
How many Training Hours and experience for a Class C Distribution Operator
Right Ans - 36hours and 1 year experience
How many Training Hours and experience for a Distribution Technician
Right Ans - 8 hours and no training.
Community Water System Right Ans - A public water supply that has at
least 15 service connections or serves 25 or more persons on a regular basis
,Primary Contaminants Right Ans - Contaminants identifies by the EPA as
harmful to umal health
Maximum Containment Level (MCL) Right Ans - The level in which
contaminants must not exceed or public notification is required.
Cryptosporidium Right Ans - A microsocpic parasite that can be found in
water. It produces cysts that are very resistant to harsh environmental
conditions. It is responsible for intestinal illness called cryptosporidiosis.
Symptoms include diarrhea, cramps, gas, bodily discomfort, fatigue, and
weight loss. Occurs one week after exposure and can last for 1-4 weeks
Disinfection Profiling Right Ans - A water system assesses the level of
disinfection currently provided and then determines the impact a proposed
change in disinfection practice would have.
E. coli Right Ans - A bacterium that is commonly used as an indicator of
human health risk from harmful micro organisms that can be present in
water. Symptoms include sever cramps and diarrhea. Blood is often seen in
the stool. Symptoms begin 1-9 days after exposure and last a week or less.
Giardia Right Ans - A microscopic parasite that can be found in water. It
produces cysts that are resistant to harsh environmental conditions. Giardia
causes intestinal illness called giardiasis. Symptoms simular to
cryptosporidiosis. Vomition, chills, headache and fever may also occur.
Symptoms begin one week after exposure and can last up to a month.
Hard Water Right Ans - A characteristic of water caused mainly by the salts
of calcium (Ca++) and magnesium (Mg++). Undesirable due to formation of
soap curds, increase use of soap, and scale deposits in boilers and water
heaters. Defines as having hardness of 100mg/L or greater
Maximum Residual Disinfectant Level (MDRLs) Right Ans - The highest
level of disinfectant allowed in drinking water. Standards set by the US EPA
Microbial Pathogens Right Ans - Micro-organisms that cause disease
, Safe Drinking Water Act (SDWA) Right Ans - An Act passed by the US
Congress in 1974. It establishes a cooperative program among local, state, and
federal agencies to ensure safe drinking water for customers.
Ch 1 - One gallon of water weighs Right Ans - 8.34 pounds
Ch 1- The average domestic water usage per person per day is usually
somewhere in the range of Right Ans - 100-130 gallons
Ch 1 -Probably the most important source of information to use when
implementing changes in process control at a water plant is Right Ans - Lab
Results
Ch 1 - The most important duty of a water plant operator is to Right Ans -
Help to protect the health and well-being of the community
Apparent color Right Ans - The color visible in water
True color Right Ans - Dissolved material contribution to color and is not
removed through simple filtration (i.e. coffee or tea). Measure in Color Units
(CUs) using a clear glass tube called a Nessler tub.
Turbidity Right Ans - Particles suspended in water. These particles can be
removed through filtration. This is considered a primary contaminant by the
EPA. These particles can surround and protect harmful microorganisms from
being destroyed by chlorination.
Nephelometric Turbidity Unit (NTUs) Right Ans - A measure of turbidity
H+ Right Ans - hydrogen ion
OH- Right Ans - hydroxide ion
Carbonate Hardness (CH) Right Ans - Temporary hardness which is always
alkalinity. Calcium and magnesium ion combine with carbonate, bicarbonate,
and hydroxide ions to form carbonate hardness. Carbonate Hardness
precipitates out with heat.
Solutions
How many Training Hours and experience for a class D Water Operator
Right Ans - 16 Hours Training and No Experience
How many Training Hours and experience for a class C Water Operator
Right Ans - 36 Hours Training and 1 year Experience
How many Training Hours and experience for a class B Water Operator
Right Ans - 100 Hours Training and 3 years Experience (must include 1 year
of hands on experience)
How many Training Hours and experience for a class A Water Operator
Right Ans - 200 Hours Training and 5 years Experience (must include 2 years
of hands on experience)
How many Training Hours and experience for a Class C Lab Operator Right
Ans - 32 Hours and no experience
How many Training Hours and experience for a Class B Lab Operator Right
Ans - 32 hours of C and 32 hours of B and 6 months experience. ***associate in
science can substitute 32hrs of C level training
How many Training Hours and experience for a Class A Lab Operator Right
Ans - 32 hours of B and 1 year experience. ***Must include a Bachelor in
science
How many Training Hours and experience for a Class C Distribution Operator
Right Ans - 36hours and 1 year experience
How many Training Hours and experience for a Distribution Technician
Right Ans - 8 hours and no training.
Community Water System Right Ans - A public water supply that has at
least 15 service connections or serves 25 or more persons on a regular basis
,Primary Contaminants Right Ans - Contaminants identifies by the EPA as
harmful to umal health
Maximum Containment Level (MCL) Right Ans - The level in which
contaminants must not exceed or public notification is required.
Cryptosporidium Right Ans - A microsocpic parasite that can be found in
water. It produces cysts that are very resistant to harsh environmental
conditions. It is responsible for intestinal illness called cryptosporidiosis.
Symptoms include diarrhea, cramps, gas, bodily discomfort, fatigue, and
weight loss. Occurs one week after exposure and can last for 1-4 weeks
Disinfection Profiling Right Ans - A water system assesses the level of
disinfection currently provided and then determines the impact a proposed
change in disinfection practice would have.
E. coli Right Ans - A bacterium that is commonly used as an indicator of
human health risk from harmful micro organisms that can be present in
water. Symptoms include sever cramps and diarrhea. Blood is often seen in
the stool. Symptoms begin 1-9 days after exposure and last a week or less.
Giardia Right Ans - A microscopic parasite that can be found in water. It
produces cysts that are resistant to harsh environmental conditions. Giardia
causes intestinal illness called giardiasis. Symptoms simular to
cryptosporidiosis. Vomition, chills, headache and fever may also occur.
Symptoms begin one week after exposure and can last up to a month.
Hard Water Right Ans - A characteristic of water caused mainly by the salts
of calcium (Ca++) and magnesium (Mg++). Undesirable due to formation of
soap curds, increase use of soap, and scale deposits in boilers and water
heaters. Defines as having hardness of 100mg/L or greater
Maximum Residual Disinfectant Level (MDRLs) Right Ans - The highest
level of disinfectant allowed in drinking water. Standards set by the US EPA
Microbial Pathogens Right Ans - Micro-organisms that cause disease
, Safe Drinking Water Act (SDWA) Right Ans - An Act passed by the US
Congress in 1974. It establishes a cooperative program among local, state, and
federal agencies to ensure safe drinking water for customers.
Ch 1 - One gallon of water weighs Right Ans - 8.34 pounds
Ch 1- The average domestic water usage per person per day is usually
somewhere in the range of Right Ans - 100-130 gallons
Ch 1 -Probably the most important source of information to use when
implementing changes in process control at a water plant is Right Ans - Lab
Results
Ch 1 - The most important duty of a water plant operator is to Right Ans -
Help to protect the health and well-being of the community
Apparent color Right Ans - The color visible in water
True color Right Ans - Dissolved material contribution to color and is not
removed through simple filtration (i.e. coffee or tea). Measure in Color Units
(CUs) using a clear glass tube called a Nessler tub.
Turbidity Right Ans - Particles suspended in water. These particles can be
removed through filtration. This is considered a primary contaminant by the
EPA. These particles can surround and protect harmful microorganisms from
being destroyed by chlorination.
Nephelometric Turbidity Unit (NTUs) Right Ans - A measure of turbidity
H+ Right Ans - hydrogen ion
OH- Right Ans - hydroxide ion
Carbonate Hardness (CH) Right Ans - Temporary hardness which is always
alkalinity. Calcium and magnesium ion combine with carbonate, bicarbonate,
and hydroxide ions to form carbonate hardness. Carbonate Hardness
precipitates out with heat.
