Page 1 of 31
TEXAS LANDSCAPE IRRIGATION EXAM
PRACTICE TEST | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS | BRAND
NEW!
1. What is hydrozoning?
A. Testing water pressure
B. Grouping plants with similar water needs
C. Using chemicals in irrigation
D. Fertilizing via sprinkler
Rationale: Hydrozoning maximizes efficiency by grouping plants
with similar water use into the same zone.
2. What is one of the first steps in troubleshooting a valve
that won’t open?
A. Replace the controller
B. Check for voltage at the solenoid
C. Flush the system
D. Dig out the main line
Rationale: Checking voltage helps determine if the problem is
electrical or mechanical.
3. What is the purpose of a controller’s "manual start"
function?
A. To test water quality
B. To manually operate zones without waiting for scheduled time
C. To clean filters
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D. To set future run times
Rationale: Manual start allows an irrigator to activate the
system outside of scheduled programming.
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4. According to Texas rules, what must be provided to the
property owner after installation?
A. Soil test results
B. Property survey
C. As-built drawing and maintenance checklist
D. Planting guide
Rationale: TCEQ requires irrigators to provide an as-built
system drawing and system maintenance checklist.
5. When is it acceptable to irrigate pavement in Texas?
A. During drought
B. Never, unless unavoidable due to system design
C. Only at night
D. During construction
Rationale: Texas law discourages irrigation overspray on
pavement unless unavoidable.
6. What is water hammer?
A. Frozen water in pipes
B. A shockwave caused by sudden change in water flow
C. A test for pressure
D. A kind of valve
Rationale: Water hammer is a hydraulic shock that can damage
pipes and valves.
7. What is the best way to determine runtime for an
irrigation zone?
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A. Guess based on temperature
B. Use evapotranspiration (ET) and plant water needs
C. Based on number of heads
D. Follow manufacturer suggestions only
Rationale: ET and plant needs give an accurate estimation of
runtime for efficient water use.
8. What does a flow sensor measure?
A. Pressure
B. Gallons of water used
C. Time
D. Soil temperature
Rationale: Flow sensors track the volume of water flowing
through the system.
9. What causes misting from spray heads?
A. Clogged nozzles
B. Excessive pressure
C. Cold temperatures
D. Sunlight
Rationale: High pressure causes misting, leading to inefficient
water application.
10. What device corrects high pressure in irrigation zones?
A. Timer
B. Flow sensor
C. Pressure regulator
D. Backflow preventer
TEXAS LANDSCAPE IRRIGATION EXAM
PRACTICE TEST | FREQUENTLY TESTED
QUESTIONS WITH CORRECT ANSWERS | BRAND
NEW!
1. What is hydrozoning?
A. Testing water pressure
B. Grouping plants with similar water needs
C. Using chemicals in irrigation
D. Fertilizing via sprinkler
Rationale: Hydrozoning maximizes efficiency by grouping plants
with similar water use into the same zone.
2. What is one of the first steps in troubleshooting a valve
that won’t open?
A. Replace the controller
B. Check for voltage at the solenoid
C. Flush the system
D. Dig out the main line
Rationale: Checking voltage helps determine if the problem is
electrical or mechanical.
3. What is the purpose of a controller’s "manual start"
function?
A. To test water quality
B. To manually operate zones without waiting for scheduled time
C. To clean filters
,Page 2 of 31
D. To set future run times
Rationale: Manual start allows an irrigator to activate the
system outside of scheduled programming.
,Page 3 of 31
4. According to Texas rules, what must be provided to the
property owner after installation?
A. Soil test results
B. Property survey
C. As-built drawing and maintenance checklist
D. Planting guide
Rationale: TCEQ requires irrigators to provide an as-built
system drawing and system maintenance checklist.
5. When is it acceptable to irrigate pavement in Texas?
A. During drought
B. Never, unless unavoidable due to system design
C. Only at night
D. During construction
Rationale: Texas law discourages irrigation overspray on
pavement unless unavoidable.
6. What is water hammer?
A. Frozen water in pipes
B. A shockwave caused by sudden change in water flow
C. A test for pressure
D. A kind of valve
Rationale: Water hammer is a hydraulic shock that can damage
pipes and valves.
7. What is the best way to determine runtime for an
irrigation zone?
, Page 4 of 31
A. Guess based on temperature
B. Use evapotranspiration (ET) and plant water needs
C. Based on number of heads
D. Follow manufacturer suggestions only
Rationale: ET and plant needs give an accurate estimation of
runtime for efficient water use.
8. What does a flow sensor measure?
A. Pressure
B. Gallons of water used
C. Time
D. Soil temperature
Rationale: Flow sensors track the volume of water flowing
through the system.
9. What causes misting from spray heads?
A. Clogged nozzles
B. Excessive pressure
C. Cold temperatures
D. Sunlight
Rationale: High pressure causes misting, leading to inefficient
water application.
10. What device corrects high pressure in irrigation zones?
A. Timer
B. Flow sensor
C. Pressure regulator
D. Backflow preventer
