CIT study guide
CIT · Work through your exam, one topic at a time.
The Certified Irrigation Technician (CIT) is a credential for the people who install, service, and repair landscape and turf irrigation systems - field technicians, installers, service crew leads, and the supervisors who sign off on their work. It is aimed at practitioners who already spend their days at the trench and the controller, rather than at designers (who have a separate design-side credential path) or at trainees with no field time at all. The CIT study guide has 7 sections and about 1,989 words.
01Irrigation Hydraulics and System Design Fundamentals
Every design decision starts with the water supply. Static pressure is measured with no water moving; dynamic (working) pressure is what remains while a zone runs.
296 words, about 1 min02Backflow Prevention and Cross-Connection Control
A cross-connection is any actual or potential link between potable water and a contamination source. Backflow happens two ways: backsiphonage, driven by negative pressure in the supply (main break, hydrant use, nearby fire flow), and backpressure, when downstream pressure exceeds supply pressure (booster pump, elevation, chemical injection).
279 words, about 1 min03Electrical and Control Systems: Controllers, Valves, Wiring, Sensors
Irrigation control is low voltage: a 24 VAC transformer in the controller powers solenoids through a common wire plus one station wire per valve. The controller switches the common side, so a single loose common conductor can knock out the entire field system.
288 words, about 1 min04System Components and Materials
Heads fall into three families: sprays (fixed arc, high precipitation, short radius), rotors (gear-driven, low precipitation, long throw), and drip/micro (emitters, lowest precipitation, best for beds and wind). Nozzle choice sets precipitation rate; a mismatched nozzle on the same zone creates stripes.
272 words, about 1 min05Installation Practices, Trenching, and Site Preparation
Installation begins before the shovel. Call the utility locate service and wait the required period; irrigation lines are routinely cut into power, gas, and fiber.
283 words, about 1 min06Maintenance, Troubleshooting, and Repair
Troubleshoot from the source outward: supply pressure and flow, then backflow device, mainline, valve, lateral, head. Measure rather than guess - a pressure gauge at a hose bibb and an ohmmeter solve most service calls.
291 words, about 1 min07Safety, Codes, and Water-Management Regulations
Regulations touch every part of the job: utility locates before digging, permits for taps and backflow devices, licensing limits on electrical and plumbing work, local watering restrictions, and manufacturer or code requirements for installation. Trenching is the leading fatality risk on irrigation work.
280 words, about 1 min