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Operator Certification Program
Wastewater Operator Certification Program banner

The Wastewater Operator Certification program (WWOCP) administers Wastewater Treatment Plant Certification examinations, certifications (grades I to V), and certification renewals. Additionally, the WWOCP classifies Wastewater Treatment Plants. Currently, there are approximately 6,000 active certified wastewater treatment plant operators. Since 1972, the State Water Board examines and certifies wastewater treatment plant (WWTP) operators for competency to operate WWTPs. Since 1994, the State Water Board has registered contract operators to operate WWTPs. As of April 2013, all classified privately owned Wastewater Treatment Plants must have certified wastewater treatment plant operators and now have the same requirements as publically owned WWTPs.


Wastewater Treatment Plant Operator Examination

Public Listing of Certified WWTP Operators

Wastewater Operator Online Payments

Step One: Online Payment Form (No Credit or Debit Cards)

Step Two: Online Payment

Disclosure: By clicking on the above link, you will be redirected to the State’s data collector website, First Data. First Data is not under the control of the State Water Resources Control Board (SWRCB) and the SWRCB is NOT responsible for the contents or links contained in their website. The SWRCB recommends that you view. First Data's security and confidentiality statements.

Wastewater Operator Certification Program Contacts

Mailing Address and Fax Number

Wastewater Operator Certification
State Water Resources Control Board
P.O. Box 944212
Sacramento, CA 94244-2120
Phone: (916) 341-5819
Fax: (916) 341-5734
Email: wwopcertprogram@waterboards.ca.gov