IA Practice Test

This page is for candidates preparing for an Irrigation Association certification exam, such as CIT, CLIA, CGIA or CIC. It offers free practice sets on controllers, scheduling, sprinkler technology, pumping, backflow, design and water auditing, plus a plain summary of the exam format, passing score and retake rules. Our questions are written by us with AI tools and are not real exam questions.

IA Exam at a Glance

What changed for IA in 2026

• Oct 24, 2026: Number of questions (CLIA - Certified Landscape Irrigation Auditor) changed to 125 multiple-choice questions (previously 125 multiple-choice questions, 3 hours).^[4]
• Oct 24, 2026: Number of questions (CGIA - Certified Golf Irrigation Auditor) changed to 125 multiple-choice questions (previously 125 multiple-choice questions, 3 hours).^[1]
• Oct 24, 2026: Delivery changed to Computer-based at testing centers (previously Computer-based at testing centers; paper/pencil at select locations).^[3]
• Oct 24, 2026: Retake policy changed to 90-day wait; max 3 attempts in 2 years, then 1-year wait (previously 90-day wait; max 3 attempts in 2 years).^[3]

What the IA is and how it works

According to Irrigation Association (IA) Certification Board, “The three-hour multiple-choice exam includes 125 questions covering:”^[1]

The Irrigation Association (IA) Certification Board runs several credentials, including Certified Irrigation Contractor (CIC), Certified Irrigation Technician (CIT), CLIA and Certified Golf Irrigation Auditor (CGIA). Exams are delivered by computer at testing centers nationwide throughout the year.

Question counts and time limits differ by credential. CIT has 100 multiple-choice questions, while CLIA and CGIA each have 125. All three of those exams allow 3 hours. We have no verified question count for CIC, so check the candidate handbook for it.

The passing score is not announced in advance. According to the handbook, it typically ranges between 70% and 75%, depending on the exam.

IA recommends experience before you sit for an exam. For CIC, that is 3 years of irrigation-related field experience, or 2 years of field experience plus 1 year of education. For CIT, it is a minimum of 6 months or 1,000 hours of field experience. For CLIA, it is a minimum of 1 year of irrigation-related work experience.

Register at least 14 days before the exam date. If you do not pass, you must wait 90 days before a retake. The handbook allows a maximum of 3 attempts in 2 years, after which there is a 1-year wait.

Details can change, so confirm fees, current rules and your credential's specifics in the IA Certification Candidate Handbook.

IA content outline and where to practise each area

The content areas below are copied from the official IA content outline published by Irrigation Association (IA) Certification Board. The right-hand column shows which of our practice sets covers it.

Worked examples: how to reason through IA questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: Schedule efficiency (SE) in irrigation describes:

1. The ratio of gallons applied to gallons metered
2. How well the irrigation schedule matches actual plant water demand
3. The pump motor efficiency rating
4. The number of zones completed per hour

Answer: B. How well the irrigation schedule matches actual plant water demand

Explanation:

The correct answer is that schedule efficiency describes how well the irrigation schedule matches actual plant water demand. The programmed run times are compared with the ET-based requirement, and over-scheduling wastes water and lowers the result.

The ratio of gallons applied to gallons metered is wrong because it compares two volumes of water and says nothing about what the plants needed. Pump motor efficiency is an equipment rating, unrelated to scheduling. The number of zones completed per hour measures speed, not whether the water applied was the right amount.

Rule to remember: schedule efficiency is about timing and amount against plant demand, not about hardware performance or how fast the system runs.

Example 2

Question: What type of sensor can be wired to a controller's sensor input to automatically suspend irrigation when the soil has sufficient moisture?

1. Anemometer
2. Soil moisture sensor (tensiometer or capacitance probe)
3. Flow meter
4. UV sensor

Answer: B. Soil moisture sensor (tensiometer or capacitance probe)

Explanation:

A soil moisture sensor, such as a tensiometer or capacitance probe, is correct. It reports water content or soil water tension to the controller, which can then suspend a scheduled run when the soil is already adequately moist.

An anemometer measures wind, so it suits wind shutoff rather than soil conditions. A flow meter measures water moving through the pipe, which helps detect leaks or breaks but does not tell you how wet the soil is. A UV sensor measures light, not moisture in the root zone.

Rule to remember: pick the sensor by the condition it measures. Soil moisture is measured in the soil, and the controller's sensor input lets that reading override the schedule.

Example 3

Question: Which controller program type allows different zones to run on different days of the week?

1. Interval program (every N days)
2. Day-of-week program
3. Odd/even day program
4. Single-run program

Answer: B. Day-of-week program

Explanation:

A day-of-week program is correct because it lets you assign specific days, such as Mon/Wed/Fri, to each zone. That flexibility helps when local watering restrictions limit which days are allowed.

An interval program runs on a repeating cycle of every N days, so zones follow the same rhythm rather than chosen weekdays. An odd/even day program follows the calendar date, which is a fixed pattern you do not tailor zone by zone. A single-run program is a one-time start, not a recurring weekly plan.

Rule to remember: if the question asks for named weekdays, think day-of-week. If it asks for a repeating gap between watering days, think interval. If it asks for calendar date parity, think odd/even.

How to use these practice tests

Start with the official content areas and the candidate handbook for your credential, so you know which topics and rules apply to you. Then take a practice set for each area and treat the first attempt as a diagnostic rather than a score.

1. Take the full practice test to see where you stand across topics.
2. Pick your weakest areas and work through the matching sets, such as controllers and automation, pumping systems or hydraulics.
3. For every miss, read the explanation and write the general rule in your own words, then check it against the official material.
4. Use soil-water-plant relationships alongside scheduling, because the two topics depend on each other.
5. Retake sets after a gap and see whether you can explain the answer without looking.

Because the passing score is not announced in advance, aim for steady understanding across every area rather than a target number. Remember the registration deadline and the retake waiting period when you pick a test date.

Sources & last verified

1. Irrigation Association (IA) Certification Board — number of questions, time limit (official source). “The three-hour multiple-choice exam includes 125 questions covering:” Verified Oct 24, 2026.
2. Irrigation Association (IA) Certification Board — number of questions, time limit, eligibility (official source). “The three-hour multiple-choice exam includes 100 questions covering:” Verified Oct 24, 2026 · source checked Oct 24, 2026.
3. Irrigation Association (IA) Certification Board — passing score, retake policy, delivery, eligibility (official source). “Depending on the exam, the passing score typically ranges between 70%75%.” Verified Oct 24, 2026.
4. Irrigation Association (IA) Certification Board — number of questions, time limit, eligibility (official source). “The three-hour multiple-choice exam includes 125 questions covering:” Verified Oct 24, 2026.
5. Irrigation Association (IA) Certification Board — other (official source). “business management” Verified Oct 28, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.