State Agencies | Online Services
Certified water and wastewater operators are essential for the protection of public health and the environment. Ohio EPA's Operator Certification program has certified more than 12,000 operators, ensuring public water and wastewater systems are operated by properly trained and qualified individuals. Learn how to become a certified water or wastewater operator.
The complete list of exam results can be found in the Exam Results tab.
The following documents provide "Need to Know Criteria" test-takers will be expected to know for each type certified operator exam.
Those taking the certified operator exam will be expected to know the formulas provided in the appropriate document below (e.g., those taking the wastewater operator certification exam should consult the "wastewater formulas" document).
A number of helpful references have been compiled to assist those studying for Ohio EPA operator certification exams. These references are only intended as a resource and are not required to be purchased in order for individuals to pass their exams.
The Division of Drinking and Ground Waters accepts exam question suggestions. Complete and submit the Ohio EPA Operator Certification Exam Question Submittal Form provided below. Instructions for submitting the form are included in the document.
Click on a date below to see that month's operator certification exam results, high scorers list, and pass list. Individual scores will be mailed approximately 30 days after the exam. The overall results, high scorers list, and pass list will be posted below approximately five to six weeks following the exam.
Important Reminder: No scores will be provided over the phone at any time.
Important reminder: At least half of the contact hours for renewals of certificates must be directly related to operations and maintenance (OM).
A number of courses have been pre-approved by Ohio EPA. Certified operators may count these courses towards their total contact hours.
Approved Contact Hour Training Providers (ACHTPs) have received authority from Ohio EPA to conduct contact hour courses without having to submit a Contact Hour Course Approval application to the Operator Certification Unit for each course. These ACHTPs have the ability to assign their own unique approval number and contact hours to each course they offer. Training providers who are not included in the List of Approved Contact Hour Training Providers may still provide contact hour courses by getting each individual course approved by the Ohio EPA.
Ohio EPA keeps lists of certified operators, contract operators, and expired operator certificates across the state.
To request to be added to the contract operator list, complete the request form below and submit the completed form via email, fax, or mail to the contact listed in the form.
Ohio EPA also keeps a list of the operators of record for the following systems:
The Operator Certification Advisory Council (Council) is a group of experts in the fields of water and wastewater treatment established by Ohio Administrative Code Rule 3745-7-10. The Council provides guidance and input to Ohio's water and wastewater operator certification program. Members of the Council include four Class III or IV operators (i.e., two water supply and two wastewater treatment), two actively employed sanitary or environmental engineers and two Ohio EPA members (i.e., one representing public water systems and one representing wastewater systems).
All Council meetings are held at 9:00am at the Ohio Environmental Protection Agency, Lazarus Government Center, 50 W. Town Street, Columbus, Ohio. The Council meeting schedule is available.
Operator certification rules can be found in Ohio Administrative Code Chapter 3745-7. To view recent operator certification enforcement actions taken by the Division of Drinking and Ground Waters, please visit the Enforcement page.
The following documents include general knowledge and skills that certified operators should have at each classification level.
Call the Operator Certification Hotline at 1-866-411-OPCT (6728) or email us
Subscribe to the Operator Certification Mailing List
Division of Drinking and Ground Waters
Phone: (614) 644-2752 ~ Fax: (614) 644-2909
Contact ~ Emergency Contacts
Staff Contacts and Expertise ~ Electronic Mailing Lists
Mailing Address: P.O. Box 1049, Columbus, OH 43216-1049
Street Address: 50 West Town Street, Suite 700, Columbus, OH 43215
Report a Spill, Release or Environmental Crime (800) 282-9378
John R. Kasich, Gov. | Scott Nally, Ohio EPA Director | Privacy Statement | Site Index | Contact | Employee Login