Landscape Certifications

Certified Landscape Irrigation Auditor

Certification gives you a competitive edge. Become a certified landscape irrigation auditor and:

  • Add instant credibility with customers and employers.
  • Increase job opportunities.
  • Demonstrate your commitment to efficient water management.

CLIA Overview

CLIAs quantify and analyze landscape irrigation water use. CLIAs:

  • Collect site data.
  • Make maintenance recommendations and perform minor repairs.
  • Perform field measurements and observations.
  • Determine irrigation uniformity and efficiency.
  • Develop a basic irrigation schedule.
  • Work with a water manager or property owner to manage overall irrigation water use.

Becoming a CLIA

To become a CLIA, you must:

  1. Register for the exam. Minimum requirement: one year of irrigation-related work experience.
  2. Pass the irrigation auditor exam. The three-hour exam includes 125 equally weighted, multiple-choice questions on irrigation audit procedures, soil-plant relationships, irrigation scheduling and equipment/technology. 
  3. Submit a landscape irrigation audit. Audits must be completed independently and verified by an IA-certified professional in good standing within one year of acceptance into the certification program. The following further outlines this requirement:  
  4. Comply with the Select Certified Code of Ethics.  
  5. Remain in good standing. CLIAs must submit 20 continuing education units per two-year cycle.

CLIA Exam Fees

IA Member  Nonmember 
Landscape Irrigation Auditor Exam Fee $250 $495

Exam Retake Fee 



Audit Resubmission Fee 



Annual Renewal Fee (one certification) 



Annual Renewal Fee (two or more certifications) 



See the Certification Candidate Handbook for exam policies, procedures and fees outside of North America.