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9400 Plum Drive, Suite 160
Urbandale, IA 50322
Phone +1 (515) 232-3623
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  • 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
        • Physical Chemical Industrial Waste Treatment 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
        • Plant Maintenance Technologist Exam References
        • Biosolids Land Applier Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator 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
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    • Ohio EPA Certification
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      • Volunteer Testimonial
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  • 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
        • Physical Chemical Industrial Waste Treatment 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
        • Plant Maintenance Technologist Exam References
        • Biosolids Land Applier Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator 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
        • Physical Chemical Industrial Waste Treatment 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
        • Plant Maintenance Technologist Exam References
        • Biosolids Land Applier Exam References
        • Backflow Prevention Assembly Tester Exam References
        • Biological Industrial Waste Treatment Operator 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

Exam Development Option

Exam Development: Designed to meet your needs

To become a testing client, your program must be a WPI Certification Program Member.

To meet the individual needs of your program, clients have the option of using ABC’s standardized exams or to develop client-customized exams.

Standardized Exams

ABC’s national standardized exams are developed in accordance with the ISO 17024 standard in order to ensure the validity, reliability, and legal defensibility of the certification exams.  With professional psychometric oversight and guidance, WPI’s technical committees develop the national standardized exams through a rigorous process that begins with a national job task analysis identifying the critical knowledge, skills, and abilities that a professional in the field ought to possess.

WPI staff and technical committees monitor the performance of standardized examination questions and examinee comments throughout the term of their use to identify and address any issues. Clients using standardized exams are assured that they are always using the most updated version of exam questions

Program-Specific Module for Standardized Exams

WPI understands that some programs must meet state and provincial regulations which require their exams to include program-specific questions. The Program-Specific Module (PSM) option allows programs to take advantage of ABC’s standardized exams while adding a section of program-specific questions (10 or 20) to the 100-point standardized exam.

Programs can select questions they feel are important for an operator in their region to know and WPI will provide separate scores for the additional section so certifiers are able to assess strong and weak areas of performance on both the standardized and region-specific content.

By using a standardized exam plus PSM, opera­tor certification programs can more easily grant reciprocity as incoming operators who are licensed in other jurisdictions using a stan­dardized exam only need to be tested on the region-specific questions for their new state or province.  The PSM is available at no additional cost when combined with a standardized exam.

Customized

The customized exam development option allows you to create an exam unique to your program.  Developed by WPI staff according to your specifications, the exam is tailored to your program’s specific technology and regulatory requirements. A customized exam may include any combination of WPI questions and your program’s questions.  WPI maintains approximately 350 backflow, 4,300 water treatment, 4,500 wastewater treatment, 3,000 distribution, 1,600 collection, and 600 very small water system questions that may be used for exam development.

Your program is responsible for providing the information and specifications necessary for WPI to develop a customized exam, selecting the questions that appear on the customized exam, and ensuring that the customized exam is valid and meets any applicable legal requirements.  WPI does not validate customized exams or make any representations or warranties regarding the validity of customized exams.  If your program provides WPI with examination questions or other examination materials, WPI has no responsibility to verify the accuracy of those questions or materials.

WPI Voluntary Certification Process >
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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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