IICRC
Water Damage Restoration
Technician
EXAM READINESS
Q&S
©2024/2025
,1. What is the primary physical effect of water damage on
porous building materials?
A) Swelling
B) Shrinkage
C) Discoloration
D) Odor development
Correct Answer: A) Swelling
Rationale: Porous materials tend to absorb water, leading
to swelling and potential structural integrity issues.
2. Which of the following is NOT a category of water in the
IICRC S500?
A) Clean water
B) Grey water
C) Black water
D) Purple water
Correct Answer: D) Purple water
Rationale: The IICRC S500 standard identifies three
categories of water: clean, grey, and black, based on
contamination levels. Purple water is not a recognized
category.
3. When addressing water damage, which of the following is
a primary concern for remediation professionals?
A) Aesthetic appeal of the structure
B) Time taken for the drying process
C) Prevention of secondary damage
D) Cost of energy for drying equipment
Correct Answer: C) Prevention of secondary damage
Rationale: While all factors are important, preventing
secondary damage such as mold growth or structural
©2024/2025
,issues is a primary concern during remediation.
4. In the context of water damage, what does 'Class of
water' refer to?
A) The category of water source
B) The level of contamination in water
C) The rate of evaporation based on the type of materials
affected
D) The certification level of the remediation professional
Correct Answer: C) The rate of evaporation based on the
type of materials affected
Rationale: 'Class of water' refers to the potential rate of
evaporation determined by the type of materials wet and the
amount of water present.
5. Which of the following equipment is essential for drying
structures after water damage?
A) Dehumidifiers
B) Air scrubbers
C) Thermal foggers
D) Ozone generators
Correct Answer: A) Dehumidifiers
Rationale: Dehumidifiers are crucial for removing moisture
from the air and materials, which is essential for drying
structures effectively.
6. What is the most critical factor to control to prevent mold
growth after water damage?
A) Temperature
B) Humidity
C) Light exposure
D) Airflow
Correct Answer: B) Humidity
©2024/2025
, Rationale: Controlling humidity is essential as mold
requires moisture to grow, and reducing humidity levels can
prevent its development.
7. Which IICRC principle is primarily concerned with the
removal of contaminants during remediation?
A) Extraction
B) Dehumidification
C) Evaporation
D) Containment
Correct Answer: A) Extraction
Rationale: Extraction is the principle focused on the
removal of water and contaminants from the affected area
to reduce the potential for further damage.
8. What is the first step in the IICRC S500 standard for
handling a water loss incident?
A) Evaluation of the affected area
B) Notification of insurance
C) Water extraction
D) Installation of drying equipment
Correct Answer: A) Evaluation of the affected area
Rationale: An initial evaluation is crucial to determine the
extent of the damage, the class and category of water, and
to plan the appropriate response.
9. Which of the following is a potential health effect
associated with sewer backflows?
A) Allergic reactions
B) Respiratory issues
C) Gastrointestinal illnesses
D) Skin irritation
Correct Answer: C) Gastrointestinal illnesses
©2024/2025
Water Damage Restoration
Technician
EXAM READINESS
Q&S
©2024/2025
,1. What is the primary physical effect of water damage on
porous building materials?
A) Swelling
B) Shrinkage
C) Discoloration
D) Odor development
Correct Answer: A) Swelling
Rationale: Porous materials tend to absorb water, leading
to swelling and potential structural integrity issues.
2. Which of the following is NOT a category of water in the
IICRC S500?
A) Clean water
B) Grey water
C) Black water
D) Purple water
Correct Answer: D) Purple water
Rationale: The IICRC S500 standard identifies three
categories of water: clean, grey, and black, based on
contamination levels. Purple water is not a recognized
category.
3. When addressing water damage, which of the following is
a primary concern for remediation professionals?
A) Aesthetic appeal of the structure
B) Time taken for the drying process
C) Prevention of secondary damage
D) Cost of energy for drying equipment
Correct Answer: C) Prevention of secondary damage
Rationale: While all factors are important, preventing
secondary damage such as mold growth or structural
©2024/2025
,issues is a primary concern during remediation.
4. In the context of water damage, what does 'Class of
water' refer to?
A) The category of water source
B) The level of contamination in water
C) The rate of evaporation based on the type of materials
affected
D) The certification level of the remediation professional
Correct Answer: C) The rate of evaporation based on the
type of materials affected
Rationale: 'Class of water' refers to the potential rate of
evaporation determined by the type of materials wet and the
amount of water present.
5. Which of the following equipment is essential for drying
structures after water damage?
A) Dehumidifiers
B) Air scrubbers
C) Thermal foggers
D) Ozone generators
Correct Answer: A) Dehumidifiers
Rationale: Dehumidifiers are crucial for removing moisture
from the air and materials, which is essential for drying
structures effectively.
6. What is the most critical factor to control to prevent mold
growth after water damage?
A) Temperature
B) Humidity
C) Light exposure
D) Airflow
Correct Answer: B) Humidity
©2024/2025
, Rationale: Controlling humidity is essential as mold
requires moisture to grow, and reducing humidity levels can
prevent its development.
7. Which IICRC principle is primarily concerned with the
removal of contaminants during remediation?
A) Extraction
B) Dehumidification
C) Evaporation
D) Containment
Correct Answer: A) Extraction
Rationale: Extraction is the principle focused on the
removal of water and contaminants from the affected area
to reduce the potential for further damage.
8. What is the first step in the IICRC S500 standard for
handling a water loss incident?
A) Evaluation of the affected area
B) Notification of insurance
C) Water extraction
D) Installation of drying equipment
Correct Answer: A) Evaluation of the affected area
Rationale: An initial evaluation is crucial to determine the
extent of the damage, the class and category of water, and
to plan the appropriate response.
9. Which of the following is a potential health effect
associated with sewer backflows?
A) Allergic reactions
B) Respiratory issues
C) Gastrointestinal illnesses
D) Skin irritation
Correct Answer: C) Gastrointestinal illnesses
©2024/2025
