To apply for WPI Certification, please enroll in the correct application on Certemy, our Certification Management Software. See the banner to the right if you are looking to apply for the Professional Operator (PO) Certification.
If you are new to the Certemy platform, please register for a new account. If you already have a Certemy account, select “Sign In” to ensure the new application gets added to your existing account. After you have used the initial link, use wpi.certemy.com for all future login attempts. From there, you will complete all steps assigned to you. Those steps include filling out general information, work experience, education, payment, and the attestation. Once all steps are complete, WPI staff will review your application. If approved, you will receive an email from our testing service partner, PSI, with instructions on how to set up your computerized exam at one of their global testing locations.
To pass the exam, you must receive a scaled score of 70 or above. Scores get sent back to the WPI Staff, and should you pass, a certificate will be issued. If you fail, you will enter the “Reexamination” step in Certemy. You will have to pay an additional fee and complete the attestation again.
Applicants must wait 30 days between testing attempts and have 6 months of eligibility from the date of their first application approval to take the exam. If it has been more than 6 months, you will have to reapply completely. Please allow 30 days for processing before inquiring about your status.
Very Small Water System
Water Treatment OIT
Water Treatment I
Water Treatment II
Water Treatment III
Water Treatment IV
Small Wastewater System
Wastewater Treatment OIT
Wastewater Treatment I
Wastewater Treatment II
Wastewater Treatment III
Wastewater Treatment IV
Collection OIT
Collection I
Collection II
Collection III
Collection IV
Distribution OIT
Distribution I
Distribution II
Distribution III
Distribution IV
Plant Maintenance OIT
Plant Maintenance I
Plant Maintenance II
Plant Maintenance III
Water Laboratory Analyst OIT
Water Laboratory Analyst I
Water Laboratory Analyst II
Water Laboratory Analyst III
Water Laboratory Analyst IV
Wastewater Laboratory Analyst OIT
Wastewater Laboratory Analyst I
Wastewater Laboratory Analyst II
Wastewater Laboratory Analyst III
Wastewater Laboratory Analyst IV
Physical/Chemical Industrial Waste OIT
Physical/Chemical Industrial Waste I
Physical/Chemical Industrial Waste II
Physical/Chemical Industrial Waste III
Physical/Chemical Industrial Waste IV
Biological Industrial Waste OIT
Biological Industrial Waste I
Biological Industrial Waste II
Biological Industrial Waste III
Biological Industrial Waste IV
Biosolids Land Appliers OIT
Biosolids Land Appliers I
Biosolids Land Appliers II
Our team can help answer your certification questions.
How do I find out if my program has mandatory certification? Contact the certifying authority for the state or province where you work to determine if mandatory certification is required for the area of certification in which you are interested.
My program does not have mandatory certification. What should I do next? If there is not a mandatory certification program, you may apply for any class level for which you qualify based on certification, examination, education and experience requirements. Individuals without a current certification must begin with the Class I (lowest level) exam. A score of 70 or above is required to pass the exam. PSI testing centers may not be available in all countries. Please contact us for assistance and information on testing through a local proctor. You may email us at certification@gowpi.org.
My program has mandatory certification. What should I do next? If there is a mandatory certification requirement, please contact your certifying authority for information on applying to their program. You may still apply for the WPI Voluntary Certification Program, however, WPI can not guarantee that your local jurisdiction will accept the WPI Certification. An exception is made if WPI offers certification levels higher than those offered in your work jurisdiction. In this situation, you may apply for a certification level above your current level of certification, provided you meet all certification requirements at that level.
For more information on certification through examination, visit Get Certified.
