When wastewater treatment plants are properly operated, public health and the state's waters are protected. This certification program is working to help ensure that operators meet the established requirements and are competent to operate and maintain wastewater treatment plants.
Our growing population creates a greater need for wastewater treatment every day. If you're interested in protecting Washington's water and want to become certified, you've come to the right website.
Who to Contact
Email, fax, or mail all correspondence and professional growth
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Exam Deadlines: None - Computer-based exams are administered Monday through Friday, twice a day. There are no scheduled exam dates or application deadlines. Applicants can apply for the exam when they meet the qualifications.
Qualification Requirements for Operator
OIT – requires 3 months of domestic wastewater treatment plant operating experience, 3 college credits or continuing education units (CEU) in something relevant to wastewater can be substituted for the operating experience.
Group I – requires 1 year of domestic wastewater treatment plant operating experience, there is no substitution for the operating experience. (When upgrading from the OIT level after 1 year of experience, you must apply to receive the upgrade).
Group II – requires 3 years of domestic wastewater treatment plant operating experience, up to half (one year six months) can be substituted with relevant experience or education.
Group III – requires 90 credits or CEUs relevant to wastewater and 4 years of domestic wastewater treatment plant operating experience with at least 2 years at a Class II or higher plant. Excess operating experience can be used to substitute for the education at a rate of 1 year of excess experience for the first year of education and 3 years of excess experience for the second year of education. Up to half (two years) of the operating experience can be substituted with relevant experience or excess education relevant to wastewater.
Group IV – requires 180 credits or CEUs in education that’s relevant to wastewater and 4 years of domestic wastewater treatment plant operating experience with at least 2 years at a Class III or higher plant. Excess operating experience can be used to substitute for the education at a rate of 1 year each of excess experience for the first two years of education and 3 years each of excess experience for the second two years of education. Up to half (two years) of the operating experience can be substituted with relevant experience or excess education relevant to wastewater as long as 2 years of operating experience is at a Class III or higher plant.
2015 Renewal fees were due 12/31/2014. If you have not paid renewal fees for 2015 your certification is in suspended status. Please contact our office. Note: WAC 173-230-100 Suspension and revocation of a certificate (1)
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Professional Growth (PG): We are currently in the 1/1/13-12/31/15 professional growth period. We are entering training documents into our database as we receive them. Note: It is the responsibility of the operator to provide documentation for professional growth to Ecology. Please see WAC 173-230-080 subsection (4) of this section. We recommend that you provide such documentation to the OpCert Program as soon as you receive it from the trainer.
You can view your current PG transcripts through SecureAccess Washington (SAW). If you haven’t created a SAW account, the registration instructions are on the Training & CEUs page on the OpCert website.
Approved Course List for Professional Growth
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