1
"B" Water Operator - 200 Practice
questions Questions with 100%
Correct Answers
in certain costal areas, intrusion of sea water in to groundwater basin is most
commonly caused by? Correct Answer: over pumping from the ground basin
Riparian rights are acquired how? Correct Answer: with title to land bordering
surface water
an underground layer of rock or soil that permeates the passage of water is
called what? Correct Answer: an aquifer
the first priority, from a public health perspective, is the production of what?
Correct Answer: water that is drinkable and free from bacteria and toxins
high color content in water would be indicative of all the following except :
Correct Answer: a high PH
what is NOT a common practice in watershed management? Correct Answer:
allow wastewater discharges into the reservoir?
controlling taste and odor problems and organic loading within the reservoir
may reduce or eliminate: Correct Answer: activated carbon treatment
chemical control of both plankton and periphyton in domestic water supply
reservoirs is primarily used to prevent or control: Correct Answer: taste and odor
problems resulting from algae blooms.
:
vPretest - Stuvia US
,2
the three major water quality indicators that affect the efficiency of using
copper sulfate as an algicide are: Correct Answer: alkalinity, suspended matter,
and water temperature.
during periods of thermal stratification and anaerobic conditions, water quality
improvements are obtained by: Correct Answer: the addition of dissolved
oxygen
the most common chemical used to treat algae blooms is? Correct Answer:
cuso 4
the purpose of screening devices is to remove: Correct Answer: large solids
in early winter, when the surface of a lake or reservoir cools to the same
temperature as the lower layers, the reservoir destratifies, causing: Correct
Answer: turnover to occur.
the following conditions would be most conducive to triggering an algae
bloom: Correct Answer: available nutrients such as nitrogen and phosphorous
and abundant sunlight.
the MCL for chlorides is? Correct Answer: 250 mg/l
the MCL for iron is? Correct Answer: 0.3 mg/l
the MCL for dissolved solids is? Correct Answer: 500 mg/l
the disinfection residual necessary in the distribution system under the surface
water treatment rule is: Correct Answer: 0.2 mg/l 100% of the time
:
vPretest - Stuvia US
, 3
the correct statement pertaining to potable water is: Correct Answer: iron is a
secondary regulation with an MCL of 0.3 mg/l
the primary MCL for tthm is : Correct Answer: .080 mg/l or 80 ppb
the secondary MCL for fluoride is: Correct Answer: 2.0 mg/l
the correct statement pertaining to potable water is : Correct Answer: odor is a
secondary regulation with an MCL of 3 TON (threshold odor number)
the primary MCL for tthm is : Correct Answer: .080 mg/l or 80 ppb
the following does not fall under the category of secondary drinking water
standards: Correct Answer: nitrate
concerning radionuclides, suppliers of water shall monitor at least: Correct
Answer: once every 36 months
if a routine sample is total coliform positive, the system shall do all the following
steps except: Correct Answer: collect the repeat samples on different days
the MORs for public water systems shall be submitted to DER within: Correct
Answer: 15 days after the month of operation
chapter 17-550 states that the supplier of water shall maintain a minimum free
chlorine residual of: Correct Answer: 0.2 mg/l or its equivalent throughout the
distribution system at all times.
for a system which collects at least 40 samples for month, to be in compliance
with the MCL for total coliform, no more that ______ of the samples collected
can test positive for the month. Correct Answer: 5% (or 2 samples)
:
vPretest - Stuvia US
"B" Water Operator - 200 Practice
questions Questions with 100%
Correct Answers
in certain costal areas, intrusion of sea water in to groundwater basin is most
commonly caused by? Correct Answer: over pumping from the ground basin
Riparian rights are acquired how? Correct Answer: with title to land bordering
surface water
an underground layer of rock or soil that permeates the passage of water is
called what? Correct Answer: an aquifer
the first priority, from a public health perspective, is the production of what?
Correct Answer: water that is drinkable and free from bacteria and toxins
high color content in water would be indicative of all the following except :
Correct Answer: a high PH
what is NOT a common practice in watershed management? Correct Answer:
allow wastewater discharges into the reservoir?
controlling taste and odor problems and organic loading within the reservoir
may reduce or eliminate: Correct Answer: activated carbon treatment
chemical control of both plankton and periphyton in domestic water supply
reservoirs is primarily used to prevent or control: Correct Answer: taste and odor
problems resulting from algae blooms.
:
vPretest - Stuvia US
,2
the three major water quality indicators that affect the efficiency of using
copper sulfate as an algicide are: Correct Answer: alkalinity, suspended matter,
and water temperature.
during periods of thermal stratification and anaerobic conditions, water quality
improvements are obtained by: Correct Answer: the addition of dissolved
oxygen
the most common chemical used to treat algae blooms is? Correct Answer:
cuso 4
the purpose of screening devices is to remove: Correct Answer: large solids
in early winter, when the surface of a lake or reservoir cools to the same
temperature as the lower layers, the reservoir destratifies, causing: Correct
Answer: turnover to occur.
the following conditions would be most conducive to triggering an algae
bloom: Correct Answer: available nutrients such as nitrogen and phosphorous
and abundant sunlight.
the MCL for chlorides is? Correct Answer: 250 mg/l
the MCL for iron is? Correct Answer: 0.3 mg/l
the MCL for dissolved solids is? Correct Answer: 500 mg/l
the disinfection residual necessary in the distribution system under the surface
water treatment rule is: Correct Answer: 0.2 mg/l 100% of the time
:
vPretest - Stuvia US
, 3
the correct statement pertaining to potable water is: Correct Answer: iron is a
secondary regulation with an MCL of 0.3 mg/l
the primary MCL for tthm is : Correct Answer: .080 mg/l or 80 ppb
the secondary MCL for fluoride is: Correct Answer: 2.0 mg/l
the correct statement pertaining to potable water is : Correct Answer: odor is a
secondary regulation with an MCL of 3 TON (threshold odor number)
the primary MCL for tthm is : Correct Answer: .080 mg/l or 80 ppb
the following does not fall under the category of secondary drinking water
standards: Correct Answer: nitrate
concerning radionuclides, suppliers of water shall monitor at least: Correct
Answer: once every 36 months
if a routine sample is total coliform positive, the system shall do all the following
steps except: Correct Answer: collect the repeat samples on different days
the MORs for public water systems shall be submitted to DER within: Correct
Answer: 15 days after the month of operation
chapter 17-550 states that the supplier of water shall maintain a minimum free
chlorine residual of: Correct Answer: 0.2 mg/l or its equivalent throughout the
distribution system at all times.
for a system which collects at least 40 samples for month, to be in compliance
with the MCL for total coliform, no more that ______ of the samples collected
can test positive for the month. Correct Answer: 5% (or 2 samples)
:
vPretest - Stuvia US
