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Texas Landscape Irrigation Exam Prep (2025/2026), 150+ Questions, Design Pressure, AVB/PVB, MPR, Xeriscaping, Drip Irrigation – TCEQ Certified

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This extensive study guide for the Texas Landscape Irrigation Exam (2025/2026) provides over 150 exam-based questions and accurate answers, covering all core areas of irrigation system design, safety, hydraulics, and water conservation. It is developed in alignment with the Texas Commission on Environmental Quality (TCEQ) standards and includes modern terminology, system components, and regulatory knowledge crucial for passing the licensing exam. Topics addressed include: Hydraulic principles: friction loss, static and dynamic pressure, actual and design pressure, pressure compensating devices. Backflow prevention systems: AVB, PVB, RPZ, DCVA, air gap rules, and installation height requirements. Irrigation components and layout: spray heads, rotary heads, drip emitters, zone control, nozzles, lateral piping, matched precipitation rate (MPR). Water conservation strategies: Xeriscaping principles, evapotranspiration, soil moisture sensors, freeze/wind/rain sensors, water auditing, scheduling. Pipe materials and fittings: PVC vs polyethylene, pipe classifications, valves, control wiring, C-factor smoothness, thrust blocks. Regulatory terms: cross-connections, greywater use, non-potable water, engineer scale, isolation valves, code compliance. This document is ideal for: Candidates preparing for the TCEQ Landscape Irrigation License in Texas. Students in landscape architecture, irrigation design, horticulture, or agricultural engineering programs. Technicians and contractors installing or maintaining residential and commercial irrigation systems. Environmental professionals focused on efficient water management or cross-connection control. Designed for clarity, precision, and exam readiness, this guide helps you understand irrigation from design to inspection, while preparing for both technical and legal certification components. Keywords: Texas irrigation exam questions, landscape irrigation license prep, AVB PVB RPZ DCVA, matched precipitation rate, static pressure, drip irrigation GPH, sprinkler head spacing, water conservation irrigation, pressure loss formula, irrigation controller scheduling, xeriscaping principles, air gap backflow, TCEQ irrigation rules, irrigation design pressure, rotary vs spray heads, C factor piping, irrigation sensor types

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Uploaded on
November 11, 2025
Number of pages
30
Written in
2025/2026
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Texas Landscape Irrigation 2025/2026
Exam Questions and Answers | A+ Score
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Pressure compensating devices help save water because they? -

🧠ANSWER ✔✔Help eliminate misting or fogging at the sprinkler heads


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




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