REHS/RS NEHA Study Guide 2022 with complete solution
When gas pipe is leaking, what methods would be used by the technician to
identify the exact point of leakage?
Using soap bubble solution
Which organization requires cover for baking dough
BISSC (Baking Industry Sanitation Standards Committee)
The Registered Sanitarians are first and foremost:
Educators
Common microorganism associated with skin rash in whirlpools?
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be:
Improper pH value
Workers in dental care may receive:
Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by:
Walking/falling
Most accidents around swimming pools:
Drowning
Which can adversely effect the nerve cell?
Neurotoxin
High rate of infection:
Campylobacter jejuni -- usually found with Salmonella, caused by contaminated chicken
source.
Most enteric disease: (Enteric-related to the digestive system)
Norwalk virus
The LEAST amount of backfill over the absorption field should be:
12 inches (12-18'')
Best method to avoid UST (Underground Storage Tank)problems:
Prevention from corrosion
Filters will:
Reduce stray radiation
Swimmers ear is caused by:
Pseudomonas
A principle for effective radiation protection:
distance, time, shielding
Radiation could scatter and bounce off the
wall, floor, ceiling
Know characteristics of alpha particles
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
160°F
Which test is initially used if water is suspected of contamination with fecal
matter?
,FECAL coliform.
Which one is the correct sequence?
Coagulation-flocculation-sedimentation-filtration
The minimum retention time recommended for a septic tank is:
24 hours
Which filter is BEST to use for small communities in developing areas and in rural
locations?
Slow sand filter
Which filter is BEST for removal of Giardia cysts from low turbidity water
Slow sand filter (DE is best for swimming pools and industrial water supplies, not
drinking water)
Microbial pollution travels only a short distance through:
Smooth clay
Backsiphonage may be prevented by all of the following methods except:
Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant?
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
protozoa
Which one is most commonly transmitted by food or water?
Hepatitis A
Entamoeba Histolytica is a
Protozoa
Which is the preferred field test for a water system (for residual chlorine)?
DPD
Which is the measurement of the amount of light scattered by particles
suspended in water test sample?
Nephelometric Turbidity Units (NTU)
Giardia is classified as a:
Protozoa
Which is transmitted by food or water?
Hepatitis A
Entamoeba Histolytica is classified as a?
Protozoa
What is another name for swimmer's itch?
Schistosoma spp
High concentrations of Nitrates in drinking water are:
A possible cause of methemoglobinemia (Blue Baby Syndrome)
Well head protection?
casing, cap and surface seal
If a water sample is chlorinated:
Use a bottle with Sodium Thiosulfate (acts as a dechlor)
Water sampling technique when transporting to the lab?
, sterile glass or plastic bottle is the most important (also using the right preservative is
important)
Which steps are correct in stream cleaning?
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?
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?
Fine loamy sand over course sand or gravel
NTU are most commonly used to?
Determine turbidity
What causes water hardness?
Minerals (Dissolved calcium and magnesium bicarbonates, sulfates, and chlorides)
Water containing Nitrates generally indicates?
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:
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?
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;
Failure to seal the well casing properly, improper grouting
The flushometer valve is typically protected by?
A non-pressure type vacuum breaker
A physical cross connection?
Is a connection which may permit/allow the flow from an unapproved (non-potable, ie.
sewer) water supply into a potable (approved) water supply.
Which type of filter is best to use to strain/remove amoebic cysts?
Diatomaceous Earth Filter, Slow Sand and/or Cartridge
What makes water have a color?
Dissolved Solids
The importance of surveys for new well water?
Infiltration from ground water (also the importance of a sanitary survey for a water
system is in order to determine the safety and adequacy of the water supply).
The importance of lime...to treat high concentrations of...
When gas pipe is leaking, what methods would be used by the technician to
identify the exact point of leakage?
Using soap bubble solution
Which organization requires cover for baking dough
BISSC (Baking Industry Sanitation Standards Committee)
The Registered Sanitarians are first and foremost:
Educators
Common microorganism associated with skin rash in whirlpools?
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be:
Improper pH value
Workers in dental care may receive:
Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by:
Walking/falling
Most accidents around swimming pools:
Drowning
Which can adversely effect the nerve cell?
Neurotoxin
High rate of infection:
Campylobacter jejuni -- usually found with Salmonella, caused by contaminated chicken
source.
Most enteric disease: (Enteric-related to the digestive system)
Norwalk virus
The LEAST amount of backfill over the absorption field should be:
12 inches (12-18'')
Best method to avoid UST (Underground Storage Tank)problems:
Prevention from corrosion
Filters will:
Reduce stray radiation
Swimmers ear is caused by:
Pseudomonas
A principle for effective radiation protection:
distance, time, shielding
Radiation could scatter and bounce off the
wall, floor, ceiling
Know characteristics of alpha particles
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
160°F
Which test is initially used if water is suspected of contamination with fecal
matter?
,FECAL coliform.
Which one is the correct sequence?
Coagulation-flocculation-sedimentation-filtration
The minimum retention time recommended for a septic tank is:
24 hours
Which filter is BEST to use for small communities in developing areas and in rural
locations?
Slow sand filter
Which filter is BEST for removal of Giardia cysts from low turbidity water
Slow sand filter (DE is best for swimming pools and industrial water supplies, not
drinking water)
Microbial pollution travels only a short distance through:
Smooth clay
Backsiphonage may be prevented by all of the following methods except:
Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant?
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
protozoa
Which one is most commonly transmitted by food or water?
Hepatitis A
Entamoeba Histolytica is a
Protozoa
Which is the preferred field test for a water system (for residual chlorine)?
DPD
Which is the measurement of the amount of light scattered by particles
suspended in water test sample?
Nephelometric Turbidity Units (NTU)
Giardia is classified as a:
Protozoa
Which is transmitted by food or water?
Hepatitis A
Entamoeba Histolytica is classified as a?
Protozoa
What is another name for swimmer's itch?
Schistosoma spp
High concentrations of Nitrates in drinking water are:
A possible cause of methemoglobinemia (Blue Baby Syndrome)
Well head protection?
casing, cap and surface seal
If a water sample is chlorinated:
Use a bottle with Sodium Thiosulfate (acts as a dechlor)
Water sampling technique when transporting to the lab?
, sterile glass or plastic bottle is the most important (also using the right preservative is
important)
Which steps are correct in stream cleaning?
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?
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?
Fine loamy sand over course sand or gravel
NTU are most commonly used to?
Determine turbidity
What causes water hardness?
Minerals (Dissolved calcium and magnesium bicarbonates, sulfates, and chlorides)
Water containing Nitrates generally indicates?
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:
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?
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;
Failure to seal the well casing properly, improper grouting
The flushometer valve is typically protected by?
A non-pressure type vacuum breaker
A physical cross connection?
Is a connection which may permit/allow the flow from an unapproved (non-potable, ie.
sewer) water supply into a potable (approved) water supply.
Which type of filter is best to use to strain/remove amoebic cysts?
Diatomaceous Earth Filter, Slow Sand and/or Cartridge
What makes water have a color?
Dissolved Solids
The importance of surveys for new well water?
Infiltration from ground water (also the importance of a sanitary survey for a water
system is in order to determine the safety and adequacy of the water supply).
The importance of lime...to treat high concentrations of...
