B- Water Operator - 200 Practice
Questions And Already Passed Answers.
in certain costal areas, intrusion of sea water in to groundwater basin is most commonly caused by? -
Answer over pumping from the ground basin
Riparian rights are acquired how? - Answer with title to land bordering surface water
an underground layer of rock or soil that permeates the passage of water is called what? - Answer an
aquifer
the first priority, from a public health perspective, is the production of what? - Answer water that is
drinkable and free from bacteria and toxins
high color content in water would be indicative of all the following except : - Answer a high PH
what is NOT a common practice in watershed management? - Answer allow wastewater discharges
into the reservoir?
controlling taste and odor problems and organic loading within the reservoir may reduce or eliminate: -
Answer activated carbon treatment
chemical control of both plankton and periphyton in domestic water supply reservoirs is primarily used
to prevent or control: - Answer taste and odor problems resulting from algae blooms.
the three major water quality indicators that affect the efficiency of using copper sulfate as an algicide
are: - Answer alkalinity, suspended matter, and water temperature.
during periods of thermal stratification and anaerobic conditions, water quality improvements are
obtained by: - Answer the addition of dissolved oxygen
,the most common chemical used to treat algae blooms is? - Answer cuso 4
the purpose of screening devices is to remove: - 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: - Answer turnover to occur.
the following conditions would be most conducive to triggering an algae bloom: - Answer available
nutrients such as nitrogen and phosphorous and abundant sunlight.
the MCL for chlorides is? - Answer 250 mg/l
the MCL for iron is? - Answer 0.3 mg/l
the MCL for dissolved solids is? - Answer 500 mg/l
the disinfection residual necessary in the distribution system under the surface water treatment rule is: -
Answer 0.2 mg/l 100% of the time
the correct statement pertaining to potable water is: - Answer iron is a secondary regulation with an
MCL of 0.3 mg/l
the primary MCL for tthm is : - Answer .080 mg/l or 80 ppb
the secondary MCL for fluoride is: - Answer 2.0 mg/l
the correct statement pertaining to potable water is : - Answer odor is a secondary regulation with an
MCL of 3 TON (threshold odor number)
the primary MCL for tthm is : - Answer .080 mg/l or 80 ppb
, the following does not fall under the category of secondary drinking water standards: - Answer nitrate
concerning radionuclides, suppliers of water shall monitor at least: - Answer once every 36 months
if a routine sample is total coliform positive, the system shall do all the following steps except: - Answer
collect the repeat samples on different days
the MORs for public water systems shall be submitted to DER within: - 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: -
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. - Answer 5%
(or 2 samples)
if any routine or repeat sample is total coliform positive, the system shall analyze that sample for: -
Answer fecal coliform or E. coli
following the disinfection of a newly developed well, a __________ survey must be conducted. the
survey requires collection of daily samples for total coliform for 20 or more days consecutive. - Answer
bacteriological.
insoluble organic colloid system owes it stability to: - Answer its small size and electrical charge
the annular space between the well casing and the bore hole must be ____________ to prevent
contamination from surface or from poor quality aquifers that the bore intersects before reaching the
desired aquifer. - Answer grouted
the flocculation process is : - Answer mechanical
Questions And Already Passed Answers.
in certain costal areas, intrusion of sea water in to groundwater basin is most commonly caused by? -
Answer over pumping from the ground basin
Riparian rights are acquired how? - Answer with title to land bordering surface water
an underground layer of rock or soil that permeates the passage of water is called what? - Answer an
aquifer
the first priority, from a public health perspective, is the production of what? - Answer water that is
drinkable and free from bacteria and toxins
high color content in water would be indicative of all the following except : - Answer a high PH
what is NOT a common practice in watershed management? - Answer allow wastewater discharges
into the reservoir?
controlling taste and odor problems and organic loading within the reservoir may reduce or eliminate: -
Answer activated carbon treatment
chemical control of both plankton and periphyton in domestic water supply reservoirs is primarily used
to prevent or control: - Answer taste and odor problems resulting from algae blooms.
the three major water quality indicators that affect the efficiency of using copper sulfate as an algicide
are: - Answer alkalinity, suspended matter, and water temperature.
during periods of thermal stratification and anaerobic conditions, water quality improvements are
obtained by: - Answer the addition of dissolved oxygen
,the most common chemical used to treat algae blooms is? - Answer cuso 4
the purpose of screening devices is to remove: - 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: - Answer turnover to occur.
the following conditions would be most conducive to triggering an algae bloom: - Answer available
nutrients such as nitrogen and phosphorous and abundant sunlight.
the MCL for chlorides is? - Answer 250 mg/l
the MCL for iron is? - Answer 0.3 mg/l
the MCL for dissolved solids is? - Answer 500 mg/l
the disinfection residual necessary in the distribution system under the surface water treatment rule is: -
Answer 0.2 mg/l 100% of the time
the correct statement pertaining to potable water is: - Answer iron is a secondary regulation with an
MCL of 0.3 mg/l
the primary MCL for tthm is : - Answer .080 mg/l or 80 ppb
the secondary MCL for fluoride is: - Answer 2.0 mg/l
the correct statement pertaining to potable water is : - Answer odor is a secondary regulation with an
MCL of 3 TON (threshold odor number)
the primary MCL for tthm is : - Answer .080 mg/l or 80 ppb
, the following does not fall under the category of secondary drinking water standards: - Answer nitrate
concerning radionuclides, suppliers of water shall monitor at least: - Answer once every 36 months
if a routine sample is total coliform positive, the system shall do all the following steps except: - Answer
collect the repeat samples on different days
the MORs for public water systems shall be submitted to DER within: - 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: -
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. - Answer 5%
(or 2 samples)
if any routine or repeat sample is total coliform positive, the system shall analyze that sample for: -
Answer fecal coliform or E. coli
following the disinfection of a newly developed well, a __________ survey must be conducted. the
survey requires collection of daily samples for total coliform for 20 or more days consecutive. - Answer
bacteriological.
insoluble organic colloid system owes it stability to: - Answer its small size and electrical charge
the annular space between the well casing and the bore hole must be ____________ to prevent
contamination from surface or from poor quality aquifers that the bore intersects before reaching the
desired aquifer. - Answer grouted
the flocculation process is : - Answer mechanical
