Ohio EPA has two exam pathways to offer for obtaining certification. The traditional paper and pencil exam is given in Columbus twice a year. The third-party exam is offered year round at various locations in the state. The exam fact sheet provides a comparison of Ohio EPA’s traditional exam format to ABC’s Third-Party exam format.

For both exam pathways, Operator-in-Training (OIT) designation is available for Class A, I or II, should the applicant pass the exam. If designated as OIT, operating experience must be documented within four years of passing the exam. For more information, please go to the Operator tab and then click on the Operator-in-Training section.

For application instructions, please visit the Operator tab and click on the eBusiness Center section.

REQUIRED TRAINING: Starting Aug. 15, 2018, all applicants will need to review the Ohio EPA Professional Operator Certification Training document prior to submitting the Ohio EPA exam, third-party exam certification, reciprocity and renewal applications and Operator-in-Training forms.

Third-Party Exam Providers

As an alternative to Ohio EPA’s paper and pencil examination, Ohio EPA has approved the Water Professionals International (WPI), formerly the Association of Boards of Certification (ABC), as an approved examination provider. Operators may now choose to take WPI examinations and then seek Ohio certification for all levels of certification except Class IV.

Ensure you meet the requirements prior to taking the Class III exam. Operator-in-Training is not available at the Class III level.

Third-party exams can be taken in Ohio or any other location around the country. Ohio testing locations: Cleveland; Cincinnati; Columbus; Akron; Cambridge; Troy; and Toledo. Locations are subject to change, please click here to find current and out-of-state testing locations.

• Schedule an Examination through WPI
• WPI’s Ohio EPA information page — Study material for the WPI exam can be found in the orange box on the left side.
• Apply for certification after passing a third-party examination — Ensure you have met the experience requirements prior to applying. No refunds will be awarded for the $45 application review fee.
• Ohio EPA and WPI exam equivalency chart

WPI/ABC Need To Know Criteria

Please note that the title on WPI’s Need to Know Criteria may be a different exam level than the Ohio EPA certification you are seeking. When you are applying through WPI’s provider, once you select Ohio EPA certification, you will select the Ohio EPA certificate level you are seeking and the appropriate WPI test is selected.

• Class 1 Water Distribution
• Class 2 Water Distribution
• Class A Water Supply  (see Drinking Water Class A)
• Class 1 Water Supply
• Class 2 Water Supply
• Class 3 Water Supply
• Class 1 Wastewater Collection
• Class 2 Wastewater Collection
• Class A Wastewater Treatment
• Class 1 Wastewater Treatment
• Class 2 Wastewater Treatment
• Class 3 Wastewater Treatment

WPI/ABC Reference Material

• Water Supply
• Water Distribution
• Wastewater Treatment
• Wastewater Collection

Formulas

• Water Supply and Distribution System Formulas
• Wastewater Treatment and Collection System Formulas

Paper and Pencil Exam

Need-to-know Criteria

The following documents provide need-to know criteria that test-takers will be expected to know for each type of certified operator exam.

• Water Supply
• Water Distribution
• Wastewater Treatment
• Wastewater Collection

Formula Sheets

• Water Supply and Distribution
• Wastewater Treatment and Collection

Reference Materials

• Reference Material Documents

Class IV

• Class IV Eligibility Requirements
• Class IV Exam Application
  • Be sure to indicate classification of plant when filling out experience information.
  • Be sure to include Table of Organization and an official Position Description signed by supervisor.   
• Frequently Asked Questions
• Policy statement, Guidance and Examination
  • Additional guidance on wastewater plant section  
• Advisory Council Class IV exam review checklists
  • Drinking water
  • Wastewater

Training and Experience Credit

• Courses and Experience Credit — These courses can be taken to reduce operating experience requirements. Only courses which are in the field for which you are applying can used for experience credit. Please contact the Operator Certification Unit with any questions.
• Free Class A Water Operator Training
• Free Class A Wastewater Operator Training — Note: This course is not approved for contact hours. This course can be used to assist in preparing for the Class A Wastewater exam.

Exam Results