Texas Landscape Irrigation Exam 2026–
2027: Practice Questions & Detailed
Answers
Pressure compensating devices help save water because they? - correct answer-
Help eliminate misting or fogging at the sprinkler heads
Landscape Irrigation - correct answer-The art and management of applying water
to landscape in a manner to encourage growth of plant material and support
water conservation
Irrigation sensors - correct answer-(Measure rain, wind, soil moisture, and freeze)
that save water and eliminate liability issues concerning ice related accidents
during freeing weather
Pressure Regulation Device - correct answer-Devices which eliminate misting or
fogging at the sprinkler heads, thus achieving better uniformity and saving water
Hydrozoning - correct answer-The practice of zoning an irrigation system based
on similar plant material with similar watering reguirements due to
environmental and or geographic influences including, but not limited to, soil
type, slope, site orientation, and solar radiation
,Licensed landscape irrigators - correct answer-Responsibility to educate,
promote, support and practice water conservation in the landscape irrigation
industry in order to preserve one of out most precious resources on earth
Absorption Rate - correct answer-The speed at which water can penetrate or
infiltrate the soil
Actual Head Pressure - correct answer-The operating pressure measured at the
base of a sprinkler head.
Actual head pressure formula - correct answer-(Static pressure) - (Total pressure
lost) = Actual head pressure
air gap - correct answer-an approved Air gap is the unobstructed vertical distance
through free atmosphere between the lowest point of a water supply outlet and
the flood level rim of the fixture or assembly into which the outlet discharges.
Physical seperation must be at least twice the diameter of the water supply outlet
but never less than 1"
Most common air gap? - correct answer-Kitchen sink
Application Rate (Precipitation rate) - correct answer-Rate at which water is
applied by sprinkler heads in a certain pattern.
For irrigation contractors, water conservation starts with? - correct answer-A
great design
, Three methods to evaluate application rate - correct answer-Densogram,
Precipitation rate formulas, Water audit
The proper watering time is early morning because? - correct answer-Sprinkler
patterns are generally less distorted from the wind
arc - correct answer-Degrees of coverage of a sprinkler from one side of a pattern
to the other
The art and management of applying water to the landscape to encourage the
growth of plant material and support water conservation is? - correct answer-
Landscape Irrigation
Atmospheric Vacuum Breaker (AVB) - correct answer-Backflow prevention device
that allows air into the piping system, with the use of a float that moves up and
down, to prevent backsiphonage.
Cannot be under constant pressure for more than 12 hours in one 24 hour
window.
A minimum of 6" higher than all down stream piping.
A separate AVB must be installed on the discharge side of each control valve,
between the valve and all emission devices.
Automatic control valve - correct answer-An electrical or hydraulic remote
control valve in a sprinkler system which is activated by an automatic controller
Backflow - correct answer-An unwanted reversal of the flow of water in a piping
system which can potentially allow non-potable water to pollute or contaminate
the potable water supply.
2027: Practice Questions & Detailed
Answers
Pressure compensating devices help save water because they? - correct answer-
Help eliminate misting or fogging at the sprinkler heads
Landscape Irrigation - correct answer-The art and management of applying water
to landscape in a manner to encourage growth of plant material and support
water conservation
Irrigation sensors - correct answer-(Measure rain, wind, soil moisture, and freeze)
that save water and eliminate liability issues concerning ice related accidents
during freeing weather
Pressure Regulation Device - correct answer-Devices which eliminate misting or
fogging at the sprinkler heads, thus achieving better uniformity and saving water
Hydrozoning - correct answer-The practice of zoning an irrigation system based
on similar plant material with similar watering reguirements due to
environmental and or geographic influences including, but not limited to, soil
type, slope, site orientation, and solar radiation
,Licensed landscape irrigators - correct answer-Responsibility to educate,
promote, support and practice water conservation in the landscape irrigation
industry in order to preserve one of out most precious resources on earth
Absorption Rate - correct answer-The speed at which water can penetrate or
infiltrate the soil
Actual Head Pressure - correct answer-The operating pressure measured at the
base of a sprinkler head.
Actual head pressure formula - correct answer-(Static pressure) - (Total pressure
lost) = Actual head pressure
air gap - correct answer-an approved Air gap is the unobstructed vertical distance
through free atmosphere between the lowest point of a water supply outlet and
the flood level rim of the fixture or assembly into which the outlet discharges.
Physical seperation must be at least twice the diameter of the water supply outlet
but never less than 1"
Most common air gap? - correct answer-Kitchen sink
Application Rate (Precipitation rate) - correct answer-Rate at which water is
applied by sprinkler heads in a certain pattern.
For irrigation contractors, water conservation starts with? - correct answer-A
great design
, Three methods to evaluate application rate - correct answer-Densogram,
Precipitation rate formulas, Water audit
The proper watering time is early morning because? - correct answer-Sprinkler
patterns are generally less distorted from the wind
arc - correct answer-Degrees of coverage of a sprinkler from one side of a pattern
to the other
The art and management of applying water to the landscape to encourage the
growth of plant material and support water conservation is? - correct answer-
Landscape Irrigation
Atmospheric Vacuum Breaker (AVB) - correct answer-Backflow prevention device
that allows air into the piping system, with the use of a float that moves up and
down, to prevent backsiphonage.
Cannot be under constant pressure for more than 12 hours in one 24 hour
window.
A minimum of 6" higher than all down stream piping.
A separate AVB must be installed on the discharge side of each control valve,
between the valve and all emission devices.
Automatic control valve - correct answer-An electrical or hydraulic remote
control valve in a sprinkler system which is activated by an automatic controller
Backflow - correct answer-An unwanted reversal of the flow of water in a piping
system which can potentially allow non-potable water to pollute or contaminate
the potable water supply.
