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Contact WPI

9400 Plum Drive, Suite 160
Urbandale, IA 50322
Phone +1 (515) 232-3623
Send an email

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About WPI
Contact WPI
PO
Prepare for your WPI Exam
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  • TESTING SERVICES
    • Information for Testing Clients
      • Exam Validation
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      • Standardized Exams
    • ABC Testing
    • Standardized Exams
      • Standardized Water Treatment Operator Exams
      • Standardized Water Distribution Operator Exams
      • Standardized Wastewater Treatment Operator Exams
      • Standardized Wastewater Collection Operator Exams
    • Examination Resources
      • Information for Examinees
      • Study Guides
      • Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator Exam References
        • Biosolids Land Applier Exam References
        • Physical Chemical Industrial Waste Treatment Operator Exam References
        • Plant Maintenance Technologist Exam References
        • Small Wastewater System Operator Exam References
        • Water Treatment Operator Exam References
        • Wastewater Treatment Operator Exam References
        • Wastewater Collection Operator Exam References
        • Water Distribution Operator Exam References
        • Water Laboratory Analyst Exam References
        • Wastewater Laboratory Analyst Exam References
        • Very Small Water System Operator Exam References
      • Need-to-Know Criteria
      • Formula/Conversion Tables
    • FAQ
  • CERTIFICATION
    • Certification Program
    • Certification Process
      • Certification Through Examination
        • Examination Resources
      • Certification by Reciprocity
    • Professional Operator
    • Operator Certification
    • Certification Renewals
    • Ohio EPA Certification
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      • Volunteer Testimonial
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    • WPI Media Kit
  • EVENTS
    • WPI’s Annual Conference – Innovation in Certification
      • IiC23 – Innovation in Certification Conference
      • IiC24 – Innovation in Certification Conference
  • Login

Contact WPI

9400 Plum Drive, Suite 160
Urbandale, IA 50322
Phone +1 (515) 232-3623
Send an email

MENU

About WPI
Contact WPI
PO
Prepare for your WPI Exam
Make a Payment
Log In
Facebook Twitter Linkedin Youtube Instagram
  • TESTING SERVICES
    • Information for Testing Clients
      • Exam Validation
      • Exam Development Option
      • Exam Delivery & Reporting
        • Computer-Based Testing Demo
      • Standardized Exams
    • ABC Testing
    • Standardized Exams
      • Standardized Water Treatment Operator Exams
      • Standardized Water Distribution Operator Exams
      • Standardized Wastewater Treatment Operator Exams
      • Standardized Wastewater Collection Operator Exams
    • Examination Resources
      • Information for Examinees
      • Study Guides
      • Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator Exam References
        • Biosolids Land Applier Exam References
        • Physical Chemical Industrial Waste Treatment Operator Exam References
        • Plant Maintenance Technologist Exam References
        • Small Wastewater System Operator Exam References
        • Water Treatment Operator Exam References
        • Wastewater Treatment Operator Exam References
        • Wastewater Collection Operator Exam References
        • Water Distribution Operator Exam References
        • Water Laboratory Analyst Exam References
        • Wastewater Laboratory Analyst Exam References
        • Very Small Water System Operator Exam References
      • Need-to-Know Criteria
      • Formula/Conversion Tables
    • FAQ
  • CERTIFICATION
    • Certification Program
    • Certification Process
      • Certification Through Examination
        • Examination Resources
      • Certification by Reciprocity
    • Professional Operator
    • Operator Certification
    • Certification Renewals
    • Ohio EPA Certification
    • OpCert Program Contacts
    • FAQ
  • MEMBERSHIP
    • Become a Member
      • Benefits of Becoming a Member
      • Associate Membership
    • Certification Program Membership
    • Make a Payment
    • WPI Members
  • ABOUT US
    • About Us
    • Read Our IMMERSE Blog
    • WPI Awards
      • WPI Awards Nominations
      • Award Recipients
    • WPI Staff
    • Board of Directors
      • Board of Directors Nominations
    • Certification Commission for Environmental Professionals
    • Annual Reports
    • Get Involved
      • Volunteer Testimonial
    • Make a Payment
    • WPI Media Kit
  • EVENTS
    • WPI’s Annual Conference – Innovation in Certification
      • IiC23 – Innovation in Certification Conference
      • IiC24 – Innovation in Certification Conference
Make A Payment
  • TESTING SERVICES
    • Information for Testing Clients
      • Exam Validation
      • Exam Development Option
      • Exam Delivery & Reporting
        • Computer-Based Testing Demo
      • Standardized Exams
    • ABC Testing
    • Standardized Exams
      • Standardized Water Treatment Operator Exams
      • Standardized Water Distribution Operator Exams
      • Standardized Wastewater Treatment Operator Exams
      • Standardized Wastewater Collection Operator Exams
    • Examination Resources
      • Information for Examinees
      • Study Guides
      • Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator Exam References
        • Biosolids Land Applier Exam References
        • Physical Chemical Industrial Waste Treatment Operator Exam References
        • Plant Maintenance Technologist Exam References
        • Small Wastewater System Operator Exam References
        • Water Treatment Operator Exam References
        • Wastewater Treatment Operator Exam References
        • Wastewater Collection Operator Exam References
        • Water Distribution Operator Exam References
        • Water Laboratory Analyst Exam References
        • Wastewater Laboratory Analyst Exam References
        • Very Small Water System Operator Exam References
      • Need-to-Know Criteria
      • Formula/Conversion Tables
    • FAQ
  • CERTIFICATION
    • Certification Program
    • Certification Process
      • Certification Through Examination
        • Examination Resources
      • Certification by Reciprocity
    • Professional Operator
    • Operator Certification
    • Certification Renewals
    • Ohio EPA Certification
    • OpCert Program Contacts
    • FAQ
  • MEMBERSHIP
    • Become a Member
      • Benefits of Becoming a Member
      • Associate Membership
    • Certification Program Membership
    • Make a Payment
    • WPI Members
  • ABOUT US
    • About Us
    • Read Our IMMERSE Blog
    • WPI Awards
      • WPI Awards Nominations
      • Award Recipients
    • WPI Staff
    • Board of Directors
      • Board of Directors Nominations
    • Certification Commission for Environmental Professionals
    • Annual Reports
    • Get Involved
      • Volunteer Testimonial
    • Make a Payment
    • WPI Media Kit
  • EVENTS
    • WPI’s Annual Conference – Innovation in Certification
      • IiC23 – Innovation in Certification Conference
      • IiC24 – Innovation in Certification Conference
Make A Payment

Certification Process

Water is Life – Certification Makes It Happen.

The WPI Certification Program is a vehicle for individuals to become certified where a state, provincial, or other government agency does not have a mandatory program established or for individuals who hold equivalent active certification in a jurisdiction with a mandatory program.

Approximately 600 active certificates are currently maintained by the WPI Certification Program, which also holds an active database of the certificants’ qualifications, certificates issued, and continuing education credits acquired.

Certification Process

  • Complete the Certification Application on Certemy (instructions below).
  • Your current level of certification, education, and work experience will be reviewed.
  • If you meet WPI’s criteria for reciprocity, you will receive a WPI certificate that is valid for two years.
  • If you seek WPI certification through examination and meet WPI’s criteria, arrangements will be made to take a certification exam with a proctor approved by WPI. (You may be required to travel to take the WPI exam.) If you pass WPI’s certification exam you will receive a WPI certificate that is valid for two years.

Browse the WPI Certification Program area for more details on the certification process, examinations, reciprocity, benefits of certification, and certification registry.

If you have questions, please email us at certification@gowpi.org.


Certification Fees


Complete the Certification Application within the Certemy Platform.

Further instructions can be found on the Certification through Examination and Certification through Reciprocity pages. Your current level of certification, education, and work experience will be reviewed.

  • If you meet WPI’s criteria for reciprocity, you will receive a WPI certificate that is valid for two years.
  • If you seek WPI certification through examination and meet WPI’s criteria, arrangements will be made to take a certification exam with a proctor approved by WPI. (You may be required to travel to take the WPI exam.)
  • If you pass WPI’s certification exam you will receive a WPI certificate that is valid for two years. If you fail, you will receive information on setting up a retest.
  • You must wait 30 days between exam attempts.

Get Certified: Operators

WPI offers certification to operators in water treatment, distribution, very small water systems, wastewater treatment, collection, and industrial waste. Along with examination requirements, the following education and experience requirements must be met for WPI certification:

Operator Certification Requirements

Individuals who do not meet the above requirements may still be eligible through WPI’s system that allows for substitution of education and experience. In addition, WPI offers an “in-training” certification to those applicants that do not yet meet our education and experience requirements.

Along with meeting the education and experience requirements, the operator must pass WPI’s Certification Exam or an equivalent exam with a score of 70% or higher. For more information about the examination, please refer to Examination Resources.

WPI Voluntary Certification Process >
Get Involved >
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Upcoming Events

WPI will be hosting a POWER event in San Antonio, Texas June June 13th at AWWA’s ACE22 where we will be honoring the most recent PO Certifications in a pinning ceremony.  Contact us if you would like us to honor YOU.

Get More Information

© Water Professionals International.

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9400 Plum Drive, Suite 160
Urbandale, IA 50322
Phone +1 (515) 232-3623
Send an email

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