IICRC WRT Water Restoration Technician Exam Actual
Exam 2026/2027: Complete Exam-Style Questions
with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
TABLE OF CONTENTS
Section 1 | Water Damage Categories & Classifications | Q1 – Q10
Section 2 | Psychrometry & Drying Science | Q11 – Q20
Section 3 | Extraction Techniques & Equipment | Q21 – Q30
Section 4 | Structural Drying & Monitoring | Q31 – Q40
Section 5 | Health, Safety & Microbial Contamination | Q41 – Q50
Instructions: Choose the single best answer. Pass: 80% in 90 minutes.
══════════════════════════════════════
SECTION 1: WATER DAMAGE CATEGORIES & CLASSIFICATIONS Q1 – Q10
══════════════════════════════════════
Question 1 of 50
A 58-year-old homeowner calls after a burst supply line floods the kitchen. The water is
clean, cold, and has only contacted vinyl flooring and base cabinets for two hours.
A. Category 1, Class 1 ✓ CORRECT
B. Category 2, Class 1
C. Category 1, Class 2
D. Category 3, Class 1
Correct Answer: A
Rationale: A broken water supply line delivering clean, potable water meets the
definition of Category 1 water. Since wet porous materials represent less than
approximately 5% of the combined surface area, the loss is properly classified as Class
1.
,Question 2 of 50
A technician arrives at a commercial office where a toilet overflowed from the bowl side
of the trap with urine but no feces. The water saturated wall-to-wall carpet in a 12 by 15
foot room and wicked 6 inches up drywall.
A. Category 1, Class 2
B. Category 2, Class 2 ✓ CORRECT
C. Category 3, Class 1
D. Category 2, Class 3
Correct Answer: B
Rationale: Water from a toilet overflow on the room side of the trap containing urine but
no feces is defined as Category 2 water. With wet porous materials representing roughly
5% to 40% of the combined surface area in the space, the classification is Class 2.
Question 3 of 50
During a hurricane, wind-driven seawater enters a ground-floor retail store through
broken windows, covering the floor and soaking merchandise. The store manager asks
how this water should be categorized.
A. Category 2 due to salinity
B. Category 1 because it is rainwater
C. Category 3 because it is seawater and flooding ✓ CORRECT
D. Category 2 until laboratory testing proves otherwise
Correct Answer: C
Rationale: Seawater and flooding from rivers, streams, or weather-related events are
explicitly defined as Category 3 water under the S500 standard. All forms of flooding
from seawater are considered grossly contaminated regardless of visible color or odor.
Question 4 of 50
, A restoration crew is called to a single-story ranch home where a washing machine
discharge hose failed. Water covered 60% of the combined floor, wall, and ceiling
surface area in the finished basement, soaking carpet, pad, and the bottom 12 inches of
drywall.
A. Class 1, Category 1
B. Class 2, Category 2
C. Class 1, Category 2
D. Class 3, Category 2 ✓ CORRECT
Correct Answer: D
Rationale: Washing machine discharge water contains significant contamination and
nutrients for microorganisms, making it Category 2. When wet porous materials
represent more than approximately 40% of the combined surface area, the loss is Class
3.
Question 5 of 50
A restorer inspects a water loss caused by a failed water heater in a utility closet. The
clean water ran across a concrete floor and contacted a small area of carpet in an
adjacent hallway, covering less than 5% of the room's total surface area.
A. Category 1, Class 1 ✓ CORRECT
B. Category 2, Class 1
C. Category 1, Class 2
D. Category 3, Class 1
Correct Answer: A
Rationale: A failed water heater supply line is a sanitary source producing Category 1
water. With wet porous materials affecting less than approximately 5% of the combined
surface area, this is correctly classified as Class 1.
Question 6 of 50
Exam 2026/2027: Complete Exam-Style Questions
with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
TABLE OF CONTENTS
Section 1 | Water Damage Categories & Classifications | Q1 – Q10
Section 2 | Psychrometry & Drying Science | Q11 – Q20
Section 3 | Extraction Techniques & Equipment | Q21 – Q30
Section 4 | Structural Drying & Monitoring | Q31 – Q40
Section 5 | Health, Safety & Microbial Contamination | Q41 – Q50
Instructions: Choose the single best answer. Pass: 80% in 90 minutes.
══════════════════════════════════════
SECTION 1: WATER DAMAGE CATEGORIES & CLASSIFICATIONS Q1 – Q10
══════════════════════════════════════
Question 1 of 50
A 58-year-old homeowner calls after a burst supply line floods the kitchen. The water is
clean, cold, and has only contacted vinyl flooring and base cabinets for two hours.
A. Category 1, Class 1 ✓ CORRECT
B. Category 2, Class 1
C. Category 1, Class 2
D. Category 3, Class 1
Correct Answer: A
Rationale: A broken water supply line delivering clean, potable water meets the
definition of Category 1 water. Since wet porous materials represent less than
approximately 5% of the combined surface area, the loss is properly classified as Class
1.
,Question 2 of 50
A technician arrives at a commercial office where a toilet overflowed from the bowl side
of the trap with urine but no feces. The water saturated wall-to-wall carpet in a 12 by 15
foot room and wicked 6 inches up drywall.
A. Category 1, Class 2
B. Category 2, Class 2 ✓ CORRECT
C. Category 3, Class 1
D. Category 2, Class 3
Correct Answer: B
Rationale: Water from a toilet overflow on the room side of the trap containing urine but
no feces is defined as Category 2 water. With wet porous materials representing roughly
5% to 40% of the combined surface area in the space, the classification is Class 2.
Question 3 of 50
During a hurricane, wind-driven seawater enters a ground-floor retail store through
broken windows, covering the floor and soaking merchandise. The store manager asks
how this water should be categorized.
A. Category 2 due to salinity
B. Category 1 because it is rainwater
C. Category 3 because it is seawater and flooding ✓ CORRECT
D. Category 2 until laboratory testing proves otherwise
Correct Answer: C
Rationale: Seawater and flooding from rivers, streams, or weather-related events are
explicitly defined as Category 3 water under the S500 standard. All forms of flooding
from seawater are considered grossly contaminated regardless of visible color or odor.
Question 4 of 50
, A restoration crew is called to a single-story ranch home where a washing machine
discharge hose failed. Water covered 60% of the combined floor, wall, and ceiling
surface area in the finished basement, soaking carpet, pad, and the bottom 12 inches of
drywall.
A. Class 1, Category 1
B. Class 2, Category 2
C. Class 1, Category 2
D. Class 3, Category 2 ✓ CORRECT
Correct Answer: D
Rationale: Washing machine discharge water contains significant contamination and
nutrients for microorganisms, making it Category 2. When wet porous materials
represent more than approximately 40% of the combined surface area, the loss is Class
3.
Question 5 of 50
A restorer inspects a water loss caused by a failed water heater in a utility closet. The
clean water ran across a concrete floor and contacted a small area of carpet in an
adjacent hallway, covering less than 5% of the room's total surface area.
A. Category 1, Class 1 ✓ CORRECT
B. Category 2, Class 1
C. Category 1, Class 2
D. Category 3, Class 1
Correct Answer: A
Rationale: A failed water heater supply line is a sanitary source producing Category 1
water. With wet porous materials affecting less than approximately 5% of the combined
surface area, this is correctly classified as Class 1.
Question 6 of 50
