ACTUAL DETAILED SOLUTIONS 2026
UPDATED.
The scientific community worldwide largely agrees that the best strategy for preventing
Legionnaires' disease, with current technology, is to: - Answer Manage building water systems
to minimize Legionella bacteria
The scientific community worldwide largely agrees that the best strategy for preventing
Legionnaires' disease, with current technology, is to - Answer Manage building water systems
to minimize Legionella bacteria
Studies have shown that a legionella infection can be contracted by - Answer inhaling or
aspirating into the lungs legionella bacteria transmitted from water
True or False: Legionellosis is any illness caused by Legionella bacteria. The two most common
types are Pontiac fever and Legionnaire's disease. - Answer True
Legionnaire's disease is typically treated with - Answer ANTIBIOTICS
True or False: The US Centers for Medicare and Medicaid Services (CMS) memorandum QSO-17-
30-Hospitals/CAHs/NHs requires that hospitals test their water systems for Legionella? - Answer
False
Per the memorandum referencing "QSO-17-30-Hospitals/CAHs/NHs," the US Department of
Health & Human Services, Centers for Medicare and Medicaid Services (CMS), requires that all
but which of the following facility types implement a water management program to reduce the
risk of Legionella and other opportunistic pathogens: - Answer outpatient clinics
True or False: As biofilm grows, fragments of it break off and flow into the water, delivering
potentially high levels of Legionella to faucets, showers, and drinking fountains - Answer True
True or False: Only smokers or persons who are immunocompromised or elderly are at risk of
contracting Legionnaires' disease and of dying from it. - Answer False
Are most cases of legionnaires disease diagnosed? What type of cases are diagnoses? - Answer
Most cases of Legionnaires' disease are not diagnosed and many cases that are diagnosed result
in death or long term disabilities.
,True or False: Pontiac fever is a highly contagious illness with a death rate of nearly 50% -
Answer False
True or False: Biofilms that form on valves and fittings and pipe walls can not only feed
Legionella bacteria but also protect them from disinfectants. - Answer True
Legionella is - Answer Bacteria that typically live inside biofilm or amoebae
Systems or devices that can harbor and transmit Legionella and have been implicated in cases of
Legionnaires' disease include all but which of the following: - Answer natural gas piping
According to the [US] Centers for Disease Control and Prevention, approximately what
percentage of Legionnaires' disease cases among hospital patients are diagnosed? - Answer
10%
Many outbreaks of Legionnaires' disease that have been reported in scientific literature were
shown to be associated with which of the following? - Answer Construction projects or water
main work
How many legionella species are there? - Answer There are more than 50 legionella species,
less than half of which have been linked to legionnaires' disease.
True or False: Evidence examined by the CDC after discovering Legionella indicates the bacteria
had not caused illness prior to the outbreak in 1976. - Answer False
Which of the following is not an essential component of water management plans developed
for the purpose of controlling Legionella? - Answer Average annual temperature of the water
in the fire protection system
True or False: The purpose of flow diagrams is to simply show each step where water is
received, processed, or used — where it comes from and where it flows to. Flow diagrams are
not plumbing drawings. They do not need to be to scale or show the piping layout. Unnecessary
details should be omitted. - Answer True
According to the table on control measures in ASSE 12000 WICRA Forms, water temperatures
should be monitored to ensure: - Answer Cold water is < = 65 F and hot water > = 110 F
Legionella water management plans should include (2 answers) - Answer - Legionella hazard
analysis of the water systems
- Legionella control measures
, Legionella expertise is not needed to (3) - Answer - Survey a facility's water systems
- construct flow diagrams
- establish documentation and verification procedures
The verification person must review documentation to verify - Answer implementation of the
plan
For the purpose of developing a water management plan, the objectives of a facility survey are
to __________ the water systems and key components of the water systems. - Answer identify
Which of the following would provide the most direct and reliable validation of a Legionella
management plan for the plumbing system in a hotel or office building: - Answer Test water
samples for legionella with proper sample methodolgy and interpretation of results
The scientific community worldwide largely agrees that (select three answers): - Answer -
Waterborne legionella bacteria can cause legionnaire's disease
- Minimizing legionella in a building water system is the best strategy for minimizing the risk of
the disease.
- Building water systems should be managed to minimize legionella
Each legionella control measure must be - Answer monitored to determine whether it is
performed to a designated standard (control limit)
For most facilities, developing a Legionella water management plan will involve six primary
steps including all but which of the following: - Answer Assess the condition and cleanliness of
all water related equipment and devices including cooling towers, water heaters, showerheads,
and aerators
According to the CDC Toolkit titled "Developing a Water Management Program to Reduce
Legionella Growth & Spread in Buildings," the purpose of the toolkit is to help: - Answer
facility personnel develop and implement a water management program to reduce their
building's risk for growing and spreading Legionella
legionella expertise is needed to (2) - Answer - specify control measures with monitoring,
limits, and corrective actions
- establish validation procedures
The water systems inventory and flow diagrams should include (select two answers): - Answer
- points as well as processing steps