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Exam (elaborations)

Irrigation Licensing Exam | 150+ Q&A | Pressure, Backflow, Hydrozoning, Design, Standards | 2025/2026 Certification

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This document provides a comprehensive bank of over 150 licensing exam questions and correct answers, fully aligned with the Irrigation Licensing requirements for 2025/2026. It is designed for candidates preparing for certification exams in landscape irrigation, residential and commercial systems, and water-efficient design across U.S. states where licensing is required. It covers all foundational and advanced irrigation concepts including water pressure calculations (static/dynamic), friction loss, backflow prevention devices (RPZ, PVB, DCVA), hydrozoning, soil infiltration, precipitation rate, and system components like rotors, spray heads, drip tubing, valves, controllers, and boosters. Also included are units of measure and conversions, flow rate calculations, slope and contour mapping, and material standards (ASTM, ISO, ASABE) critical to professional-grade irrigation installation and maintenance. You'll also find detailed insights into irrigation plan interpretation, smart controller use, safety compliance, uniform water distribution, and water conservation best practices. The document incorporates recent standards from ASABE, ISO, ASTM, and design principles for water efficiency and backflow protection—making it a high-value study tool for modern irrigation professionals. Ideal for: – Irrigation contractors and technicians seeking state or national certification – Landscape professionals, municipal workers, and facility managers – Students in agricultural, horticulture, or landscape design programs – Individuals preparing for written licensing exams or professional recertification – EPA WaterSense and IA exam candidates Keywords: irrigation licensing, sprinkler systems, hydrozoning, static pressure, backflow prevention, RPZ, PVB, DCVA, precipitation rate, infiltration rate, pressure regulators, flow rate, water conservation, soil saturation, PVC fittings, drip irrigation, smart controllers, ASTM standards, ISO standards, ASABE S626, irrigation zones, slope mapping, irrigation design, uniformity, water window, friction loss, booster pump, irrigation exam prep

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Irrigation
Course
Irrigation










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Institution
Irrigation
Course
Irrigation

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Uploaded on
November 11, 2025
Number of pages
30
Written in
2025/2026
Type
Exam (elaborations)
Contains
Questions & answers

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Irrigation Licensing 2025/2026 Exam
Questions and Answers 100%
Guaranteed Success | Already Rated A+



Landscape Irrigation - 🧠ANSWER ✔✔The science of applying the

necessary amount of water to promote or sustain healthy growth of plant

material or turf.


New Installation - 🧠ANSWER ✔✔An irrigation system installed at a location

where one did not previously exist.


Major maintenance - 🧠ANSWER ✔✔Alteration, Repair, or service that

involves opening the mainline to the atmosphere. Includes mainline repair

valves, and replacing the diaphragm.


Completion of Irrigation system - 🧠ANSWER ✔✔All standards are met and

the irrigator is satisfied.

,Absorption Rate - 🧠ANSWER ✔✔The rate at which soil absorbs water. This

is essential for determining the amount of water needed and the time

between Irrigations.


Arc - 🧠ANSWER ✔✔The surface area of a landscape the head will provide

water. (half, full, 90, 45)


As Built Plans - 🧠ANSWER ✔✔A corrected or redrawn plan, showing

location of all major components


Actual Head Pressure - 🧠ANSWER ✔✔The operating pressure at the base

of a sprinkler head.


Bubbler - 🧠ANSWER ✔✔A low pressure irrigation emitter that releases

water at or near ground level. It is commonly use for deep watering of trees

and shrubs.


Booster Pump - 🧠ANSWER ✔✔Increases operating pressure.


Check Valve - 🧠ANSWER ✔✔A valve that allows water to flow in only one

direction, preventing back flow and ensuring even water distribution across

zones.

, Controller ( Timer) - 🧠ANSWER ✔✔A device that schedules and controls

irrigation zones and runtime automatically based on a set program.


Cycle - 🧠ANSWER ✔✔A complete watering sequence in an irrigation

system, from start to finish of each zone.


Direct burial wire - 🧠ANSWER ✔✔Listed UL, UF. Any wire approved for

direct underground burial without conduit.


Design Pressure - 🧠ANSWER ✔✔Pressure required for an emission device

to work.


Drip Irrigation - 🧠ANSWER ✔✔An irrigation method where water is

delivered slowly and directly to the base of plants through emitters,

reducing water waste and evaporation.


Emission Device - 🧠ANSWER ✔✔Any device that is contained within an

irrigation system that is used to apply water.


Evapotranspiration (ET) - 🧠ANSWER ✔✔The total water loss from soil

evaporation and plant transpiration. Used to calculate the irrigation needs

of plants.




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