AWWA Water Loss Control Certification
Exam Questions and Correct Answers
Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a water audit?
A. Increase water pressure
B. Identify billing errors only
C. Quantify water losses in a distribution system
D. Replace old pipelines
Water audits measure input vs. consumption to determine system
losses.
2. Apparent water loss includes:
A. Main breaks
B. Tank overflows
C. Metering inaccuracies and theft
D. Fire hydrant flushing
,Apparent losses are non-physical losses such as metering and billing
errors.
3. Real water loss refers to:
A. Unauthorized consumption
B. Meter errors
C. Physical leakage from system infrastructure
D. Billing adjustments
Real losses are actual water escaping the system.
4. Non-revenue water is:
A. Water used for firefighting only
B. Water produced but not billed
C. Water sold to industries
D. Water stored in reservoirs
NRW includes both physical and apparent losses.
5. The Infrastructure Leakage Index (ILI) compares:
,A. Pressure vs demand
B. Current losses vs unavoidable losses
C. Revenue vs cost
D. Pipe age vs diameter
ILI helps benchmark system performance.
6. Which tool is commonly used for leak detection?
A. Flow chart
B. GIS mapping only
C. Acoustic listening devices
D. Chlorine test kits
Acoustic devices detect sound from leaks.
7. Night flow analysis is used to:
A. Increase consumption
B. Measure peak demand
C. Identify minimum system leakage
D. Test reservoir capacity
Low nighttime demand helps reveal leaks.
, 8. Water meter accuracy is typically affected by:
A. Pipe material
B. Age and wear of the meter
C. Water color
D. Weather conditions only
Older meters often under-register flow.
9. What is the first step in conducting a water audit?
A. Replace meters
B. Install SCADA
C. Define system boundaries and input volume
D. Repair leaks
System definition is critical for accurate auditing.
10. Pressure management reduces:
A. Meter reading errors
B. Billing fraud
C. Leakage rates in distribution systems
D. Water production costs
Higher pressure increases leakage rates.
Exam Questions and Correct Answers
Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of a water audit?
A. Increase water pressure
B. Identify billing errors only
C. Quantify water losses in a distribution system
D. Replace old pipelines
Water audits measure input vs. consumption to determine system
losses.
2. Apparent water loss includes:
A. Main breaks
B. Tank overflows
C. Metering inaccuracies and theft
D. Fire hydrant flushing
,Apparent losses are non-physical losses such as metering and billing
errors.
3. Real water loss refers to:
A. Unauthorized consumption
B. Meter errors
C. Physical leakage from system infrastructure
D. Billing adjustments
Real losses are actual water escaping the system.
4. Non-revenue water is:
A. Water used for firefighting only
B. Water produced but not billed
C. Water sold to industries
D. Water stored in reservoirs
NRW includes both physical and apparent losses.
5. The Infrastructure Leakage Index (ILI) compares:
,A. Pressure vs demand
B. Current losses vs unavoidable losses
C. Revenue vs cost
D. Pipe age vs diameter
ILI helps benchmark system performance.
6. Which tool is commonly used for leak detection?
A. Flow chart
B. GIS mapping only
C. Acoustic listening devices
D. Chlorine test kits
Acoustic devices detect sound from leaks.
7. Night flow analysis is used to:
A. Increase consumption
B. Measure peak demand
C. Identify minimum system leakage
D. Test reservoir capacity
Low nighttime demand helps reveal leaks.
, 8. Water meter accuracy is typically affected by:
A. Pipe material
B. Age and wear of the meter
C. Water color
D. Weather conditions only
Older meters often under-register flow.
9. What is the first step in conducting a water audit?
A. Replace meters
B. Install SCADA
C. Define system boundaries and input volume
D. Repair leaks
System definition is critical for accurate auditing.
10. Pressure management reduces:
A. Meter reading errors
B. Billing fraud
C. Leakage rates in distribution systems
D. Water production costs
Higher pressure increases leakage rates.
