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ARIZONA CR-21 HARDSCAPING & IRRIGATION
SYSTEMS PRACTICE EXAM SPECIFIC TO
ACTUAL 2026 SITTING EXAM QS & AS
EXAM OVERVIEW
The Arizona CR-21 Hardscaping & Irrigation Systems exam tests competency in
installing, altering, and repairing hardscape features and irrigation systems. 75
questions cover trade-specific knowledge including materials, installation
techniques, irrigation layout, drainage, electrical basics (low voltage), codes,
safety, and general trade skills.
This practice test mirrors that breakdown.
SECTION 1 — IRRIGATION SYSTEMS (Q1–15)
1. What component controls the timing and duration of water
delivery to irrigation zones?
A. Backflow preventer
B. Controller/timer
C. Hose bib
D. Check valve
Answer: B
Rationale: The controller/timer programs irrigation schedules
and duration.
2. A backflow preventer is required to:
A. Increase water pressure
, 2
B. Protect potable water from contamination
C. Reduce evaporation
D. Filter out sediment
Answer: B
Rationale: Backflow preventers keep non-potable water from
flowing back into the drinking supply.
3. Drip irrigation systems are most effective for:
A. Lawns
B. Trees and shrubs
C. Large turf areas
D. Paved surfaces
Answer: B
Rationale: Drip systems deliver water slowly at root zones, best
for plants.
4. Which sprinkler head provides the most uniform large turf
coverage?
A. Rotor
B. Bubblers
C. Spray head
D. Soaker tube
ARIZONA CR-21 HARDSCAPING & IRRIGATION
SYSTEMS PRACTICE EXAM SPECIFIC TO
ACTUAL 2026 SITTING EXAM QS & AS
EXAM OVERVIEW
The Arizona CR-21 Hardscaping & Irrigation Systems exam tests competency in
installing, altering, and repairing hardscape features and irrigation systems. 75
questions cover trade-specific knowledge including materials, installation
techniques, irrigation layout, drainage, electrical basics (low voltage), codes,
safety, and general trade skills.
This practice test mirrors that breakdown.
SECTION 1 — IRRIGATION SYSTEMS (Q1–15)
1. What component controls the timing and duration of water
delivery to irrigation zones?
A. Backflow preventer
B. Controller/timer
C. Hose bib
D. Check valve
Answer: B
Rationale: The controller/timer programs irrigation schedules
and duration.
2. A backflow preventer is required to:
A. Increase water pressure
, 2
B. Protect potable water from contamination
C. Reduce evaporation
D. Filter out sediment
Answer: B
Rationale: Backflow preventers keep non-potable water from
flowing back into the drinking supply.
3. Drip irrigation systems are most effective for:
A. Lawns
B. Trees and shrubs
C. Large turf areas
D. Paved surfaces
Answer: B
Rationale: Drip systems deliver water slowly at root zones, best
for plants.
4. Which sprinkler head provides the most uniform large turf
coverage?
A. Rotor
B. Bubblers
C. Spray head
D. Soaker tube
