COLORADO CROSS CONNECTION CONTROL
SPECIALIST CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is a cross-connection?
A. A direct connection between potable water and sewer
B. Any physical connection between potable water and a non-
potable source
C. A valve installed in a water line
D. A type of pump system
Rationale: A cross-connection is any actual or potential link
between safe drinking water and a contaminated source.
Correct Answer: B
2. What is backflow?
A. Normal forward flow of water
B. Reverse flow of contaminated water into potable system
C. Water pressure increase in pipes
D. Flow through a meter
Rationale: Backflow occurs when water flows in the opposite
direction, allowing contamination risk.
Correct Answer: B
,3. The two main causes of backflow are backpressure and:
A. Back leakage
B. Back siphonage
C. Water hammer
D. Air lock
Rationale: Backflow occurs due to backpressure or vacuum
conditions (back siphonage).
Correct Answer: B
4. Back siphonage occurs when:
A. Pressure increases downstream
B. Atmospheric pressure is greater than system pressure
C. Water is heated
D. Pumps are installed
Rationale: A vacuum or negative pressure causes reverse flow.
Correct Answer: B
5. Backpressure occurs when:
A. Downstream pressure exceeds supply pressure
B. Water flows downhill
C. Pipes are empty
D. Air enters system
,Rationale: Higher pressure on the downstream side forces
reversal of flow.
Correct Answer: A
6. Which is a health hazard cross-connection?
A. Lawn irrigation system
B. Fire sprinkler system
C. Chemical injection system
D. All of the above
Rationale: All listed systems can introduce contaminants into
potable water.
Correct Answer: D
7. An air gap is defined as:
A. A mechanical valve
B. A physical vertical separation between outlet and flood level
C. A pump device
D. A pressure regulator
Rationale: Air gaps prevent backflow by physical separation.
Correct Answer: B
8. The most reliable form of backflow prevention is:
, A. Double check valve
B. Air gap
C. Pressure reducing valve
D. Gate valve
Rationale: Air gaps provide non-mechanical protection.
Correct Answer: B
9. A double check valve assembly is primarily used for:
A. Severe health hazards
B. Non-health hazard protection
C. Sewer connections
D. Chemical tanks
Rationale: It is used where contamination risk is low to
moderate.
Correct Answer: B
10. A reduced pressure zone (RPZ) assembly protects against:
A. Only backpressure
B. Only back siphonage
C. Both backpressure and back siphonage
D. Flow restriction
Rationale: RPZs are designed for high hazard conditions.
Correct Answer: C
SPECIALIST CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is a cross-connection?
A. A direct connection between potable water and sewer
B. Any physical connection between potable water and a non-
potable source
C. A valve installed in a water line
D. A type of pump system
Rationale: A cross-connection is any actual or potential link
between safe drinking water and a contaminated source.
Correct Answer: B
2. What is backflow?
A. Normal forward flow of water
B. Reverse flow of contaminated water into potable system
C. Water pressure increase in pipes
D. Flow through a meter
Rationale: Backflow occurs when water flows in the opposite
direction, allowing contamination risk.
Correct Answer: B
,3. The two main causes of backflow are backpressure and:
A. Back leakage
B. Back siphonage
C. Water hammer
D. Air lock
Rationale: Backflow occurs due to backpressure or vacuum
conditions (back siphonage).
Correct Answer: B
4. Back siphonage occurs when:
A. Pressure increases downstream
B. Atmospheric pressure is greater than system pressure
C. Water is heated
D. Pumps are installed
Rationale: A vacuum or negative pressure causes reverse flow.
Correct Answer: B
5. Backpressure occurs when:
A. Downstream pressure exceeds supply pressure
B. Water flows downhill
C. Pipes are empty
D. Air enters system
,Rationale: Higher pressure on the downstream side forces
reversal of flow.
Correct Answer: A
6. Which is a health hazard cross-connection?
A. Lawn irrigation system
B. Fire sprinkler system
C. Chemical injection system
D. All of the above
Rationale: All listed systems can introduce contaminants into
potable water.
Correct Answer: D
7. An air gap is defined as:
A. A mechanical valve
B. A physical vertical separation between outlet and flood level
C. A pump device
D. A pressure regulator
Rationale: Air gaps prevent backflow by physical separation.
Correct Answer: B
8. The most reliable form of backflow prevention is:
, A. Double check valve
B. Air gap
C. Pressure reducing valve
D. Gate valve
Rationale: Air gaps provide non-mechanical protection.
Correct Answer: B
9. A double check valve assembly is primarily used for:
A. Severe health hazards
B. Non-health hazard protection
C. Sewer connections
D. Chemical tanks
Rationale: It is used where contamination risk is low to
moderate.
Correct Answer: B
10. A reduced pressure zone (RPZ) assembly protects against:
A. Only backpressure
B. Only back siphonage
C. Both backpressure and back siphonage
D. Flow restriction
Rationale: RPZs are designed for high hazard conditions.
Correct Answer: C
