TEXAS IRRIGATOR LICENSE ASSESSMENT
2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ Landscape Irrigation
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
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
Answer: Devices which eliminate misting or fogging at the sprinkler
heads, thus achieving better uniformity and saving water
◉ Hydrozoning
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
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
Answer: The speed at which water can penetrate or infiltrate the soil
◉ Actual Head Pressure
Answer: The operating pressure measured at the base of a sprinkler
head.
◉ Actual head pressure formula
Answer: (Static pressure) - (Total pressure lost) = Actual head
pressure
◉ air gap
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?
Answer: Kitchen sink
◉ Application Rate (Precipitation rate)
Answer: Rate at which water is applied by sprinkler heads in a
certain pattern.
◉ For irrigation contractors, water conservation starts with?
Answer: A great design
◉ Three methods to evaluate application rate
Answer: Densogram, Precipitation rate formulas, Water audit
◉ The proper watering time is early morning because?
Answer: Sprinkler patterns are generally less distorted from the
wind
◉ arc
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?
Answer: Landscape Irrigation
◉ Atmospheric Vacuum Breaker (AVB)
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
Answer: An electrical or hydraulic remote control valve in a
sprinkler system which is activated by an automatic controller
◉ Backflow
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.
2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ Landscape Irrigation
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
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
Answer: Devices which eliminate misting or fogging at the sprinkler
heads, thus achieving better uniformity and saving water
◉ Hydrozoning
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
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
Answer: The speed at which water can penetrate or infiltrate the soil
◉ Actual Head Pressure
Answer: The operating pressure measured at the base of a sprinkler
head.
◉ Actual head pressure formula
Answer: (Static pressure) - (Total pressure lost) = Actual head
pressure
◉ air gap
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?
Answer: Kitchen sink
◉ Application Rate (Precipitation rate)
Answer: Rate at which water is applied by sprinkler heads in a
certain pattern.
◉ For irrigation contractors, water conservation starts with?
Answer: A great design
◉ Three methods to evaluate application rate
Answer: Densogram, Precipitation rate formulas, Water audit
◉ The proper watering time is early morning because?
Answer: Sprinkler patterns are generally less distorted from the
wind
◉ arc
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?
Answer: Landscape Irrigation
◉ Atmospheric Vacuum Breaker (AVB)
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
Answer: An electrical or hydraulic remote control valve in a
sprinkler system which is activated by an automatic controller
◉ Backflow
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.
