REHS/RS NEHA Study Guide || 100% Accurate Solutions.
When gas pipe is leaking, what methods would be used by the technician to identify the exact
point of leakage? correct answers Using soap bubble solution
Which organization requires cover for baking dough correct answers BISSC (Baking Industry
Sanitation Standards Committee)
The Registered Sanitarians are first and foremost: correct answers Educators
Common microorganism associated with skin rash in whirlpools? correct answers
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be: correct
answers Improper pH value
Workers in dental care may receive: correct answers Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by: correct answers
Walking/falling
Most accidents around swimming pools: correct answers Drowning
Which can adversely effect the nerve cell? correct answers Neurotoxin
High rate of infection: correct answers Campylobacter jejuni -- usually found with
Salmonella, caused by contaminated chicken source.
Most enteric disease: (Enteric-related to the digestive system) correct answers Norwalk virus
The LEAST amount of backfill over the absorption field should be: correct answers 12 inches
(12-18'')
Best method to avoid UST (Underground Storage Tank)problems: correct answers Prevention
from corrosion
Filters will: correct answers Reduce stray radiation
Swimmers ear is caused by: correct answers Pseudomonas
A principle for effective radiation protection: correct answers distance, time, shielding
Radiation could scatter and bounce off the correct answers wall, floor, ceiling
Know characteristics of alpha particles correct answers Are they made of protons &
neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
,Minimum temperature for laundry in nursing home & health care facilities correct answers
160°F
Which test is initially used if water is suspected of contamination with fecal matter? correct
answers FECAL coliform.
Which one is the correct sequence? correct answers Coagulation-flocculation-sedimentation-
filtration
The minimum retention time recommended for a septic tank is: correct answers 24 hours
Which filter is BEST to use for small communities in developing areas and in rural locations?
correct answers Slow sand filter
Which filter is BEST for removal of Giardia cysts from low turbidity water correct answers
Slow sand filter (DE is best for swimming pools and industrial water supplies, not drinking
water)
Microbial pollution travels only a short distance through: correct answers Smooth clay
Backsiphonage may be prevented by all of the following methods except: correct answers
Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant? correct answers A
Pre-incident Plan
("A water treatment plant should have a well-equipped laboratory, certified operator, and
qualified chemist" -pg 232 of old Salvato book)
Giardia is classified as a correct answers protozoa
Which one is most commonly transmitted by food or water? correct answers Hepatitis A
Entamoeba Histolytica is a correct answers Protozoa
Which is the preferred field test for a water system (for residual chlorine)? correct answers
DPD
Which is the measurement of the amount of light scattered by particles suspended in water
test sample? correct answers Nephelometric Turbidity Units (NTU)
Giardia is classified as a: correct answers Protozoa
Which is transmitted by food or water? correct answers Hepatitis A
Entamoeba Histolytica is classified as a? correct answers Protozoa
What is another name for swimmer's itch? correct answers Schistosoma spp
, High concentrations of Nitrates in drinking water are: correct answers A possible cause of
methemoglobinemia (Blue Baby Syndrome)
Well head protection? correct answers casing, cap and surface seal
If a water sample is chlorinated: correct answers Use a bottle with Sodium Thiosulfate (acts
as a dechlor)
Water sampling technique when transporting to the lab? correct answers sterile glass or
plastic bottle is the most important (also using the right preservative is important)
Which steps are correct in stream cleaning? correct answers Stream pollution (organic) is
apparent along its length by a Zone of Degradation (just below the source), the Zone of
Active Decomposition, and the a Zone of Recovery or Self-Purification. O2 decreased in
Zone of Degredation suspended solids increased and sludge on the stream bottom.
Emergency water treatment? correct answers Boil for 1 minute. (100 degrees Celsius is 212
degrees Fahrenheit). Also can add suggested amount of chlorine per gallon of water and let
sit for 30 minutes. Can also use 8 drops of iodine tincture per quart of water. Can also use 1
tsp of bleach per gallon of water
The composition of soil under an OSS drainfield is very important in the removal of both
viruses and bacteria. Which of the following soil conditions is most favorable for removal of
viruses? correct answers Fine loamy sand over course sand or gravel
NTU are most commonly used to? correct answers Determine turbidity
What causes water hardness? correct answers Minerals (Dissolved calcium and magnesium
bicarbonates, sulfates, and chlorides)
Water containing Nitrates generally indicates? correct answers Evidence of agricultural
pollution (Note: Ammonia in the water comes from decomposition of organic matter and is
evidence of fresh water pollution.)
Microbial pollution only travels a short distance through: correct answers Sandy loam or clay
(most dense soil type)
which of these techniques is used to properly seal a drilled well to prevent contamination of
the water supply? correct answers Grouting
One of the most common reasons for the contamination of the water supply coming from a
drilled well through rock, clay or hardpan is; correct answers Failure to seal the well casing
properly, improper grouting
The flushometer valve is typically protected by? correct answers A non-pressure type vacuum
breaker
A physical cross connection? correct answers Is a connection which may permit/allow the
flow from an unapproved (non-potable, ie. sewer) water supply into a potable (approved)
water supply.
When gas pipe is leaking, what methods would be used by the technician to identify the exact
point of leakage? correct answers Using soap bubble solution
Which organization requires cover for baking dough correct answers BISSC (Baking Industry
Sanitation Standards Committee)
The Registered Sanitarians are first and foremost: correct answers Educators
Common microorganism associated with skin rash in whirlpools? correct answers
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be: correct
answers Improper pH value
Workers in dental care may receive: correct answers Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by: correct answers
Walking/falling
Most accidents around swimming pools: correct answers Drowning
Which can adversely effect the nerve cell? correct answers Neurotoxin
High rate of infection: correct answers Campylobacter jejuni -- usually found with
Salmonella, caused by contaminated chicken source.
Most enteric disease: (Enteric-related to the digestive system) correct answers Norwalk virus
The LEAST amount of backfill over the absorption field should be: correct answers 12 inches
(12-18'')
Best method to avoid UST (Underground Storage Tank)problems: correct answers Prevention
from corrosion
Filters will: correct answers Reduce stray radiation
Swimmers ear is caused by: correct answers Pseudomonas
A principle for effective radiation protection: correct answers distance, time, shielding
Radiation could scatter and bounce off the correct answers wall, floor, ceiling
Know characteristics of alpha particles correct answers Are they made of protons &
neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
,Minimum temperature for laundry in nursing home & health care facilities correct answers
160°F
Which test is initially used if water is suspected of contamination with fecal matter? correct
answers FECAL coliform.
Which one is the correct sequence? correct answers Coagulation-flocculation-sedimentation-
filtration
The minimum retention time recommended for a septic tank is: correct answers 24 hours
Which filter is BEST to use for small communities in developing areas and in rural locations?
correct answers Slow sand filter
Which filter is BEST for removal of Giardia cysts from low turbidity water correct answers
Slow sand filter (DE is best for swimming pools and industrial water supplies, not drinking
water)
Microbial pollution travels only a short distance through: correct answers Smooth clay
Backsiphonage may be prevented by all of the following methods except: correct answers
Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant? correct answers A
Pre-incident Plan
("A water treatment plant should have a well-equipped laboratory, certified operator, and
qualified chemist" -pg 232 of old Salvato book)
Giardia is classified as a correct answers protozoa
Which one is most commonly transmitted by food or water? correct answers Hepatitis A
Entamoeba Histolytica is a correct answers Protozoa
Which is the preferred field test for a water system (for residual chlorine)? correct answers
DPD
Which is the measurement of the amount of light scattered by particles suspended in water
test sample? correct answers Nephelometric Turbidity Units (NTU)
Giardia is classified as a: correct answers Protozoa
Which is transmitted by food or water? correct answers Hepatitis A
Entamoeba Histolytica is classified as a? correct answers Protozoa
What is another name for swimmer's itch? correct answers Schistosoma spp
, High concentrations of Nitrates in drinking water are: correct answers A possible cause of
methemoglobinemia (Blue Baby Syndrome)
Well head protection? correct answers casing, cap and surface seal
If a water sample is chlorinated: correct answers Use a bottle with Sodium Thiosulfate (acts
as a dechlor)
Water sampling technique when transporting to the lab? correct answers sterile glass or
plastic bottle is the most important (also using the right preservative is important)
Which steps are correct in stream cleaning? correct answers Stream pollution (organic) is
apparent along its length by a Zone of Degradation (just below the source), the Zone of
Active Decomposition, and the a Zone of Recovery or Self-Purification. O2 decreased in
Zone of Degredation suspended solids increased and sludge on the stream bottom.
Emergency water treatment? correct answers Boil for 1 minute. (100 degrees Celsius is 212
degrees Fahrenheit). Also can add suggested amount of chlorine per gallon of water and let
sit for 30 minutes. Can also use 8 drops of iodine tincture per quart of water. Can also use 1
tsp of bleach per gallon of water
The composition of soil under an OSS drainfield is very important in the removal of both
viruses and bacteria. Which of the following soil conditions is most favorable for removal of
viruses? correct answers Fine loamy sand over course sand or gravel
NTU are most commonly used to? correct answers Determine turbidity
What causes water hardness? correct answers Minerals (Dissolved calcium and magnesium
bicarbonates, sulfates, and chlorides)
Water containing Nitrates generally indicates? correct answers Evidence of agricultural
pollution (Note: Ammonia in the water comes from decomposition of organic matter and is
evidence of fresh water pollution.)
Microbial pollution only travels a short distance through: correct answers Sandy loam or clay
(most dense soil type)
which of these techniques is used to properly seal a drilled well to prevent contamination of
the water supply? correct answers Grouting
One of the most common reasons for the contamination of the water supply coming from a
drilled well through rock, clay or hardpan is; correct answers Failure to seal the well casing
properly, improper grouting
The flushometer valve is typically protected by? correct answers A non-pressure type vacuum
breaker
A physical cross connection? correct answers Is a connection which may permit/allow the
flow from an unapproved (non-potable, ie. sewer) water supply into a potable (approved)
water supply.
