Answered
How do I become a wastewater operator in Texas?
To become a Texas Class D wastewater operator you complete a TCEQ-approved basic wastewater training course, submit the application with the fee, wait for your approval letter, then pass the closed-book Class D wastewater exam at a registered testing center. No prior work experience is required for the entry grade.
Last reviewed 2026-08-03
The steps, in order
Finish the approved training, submit your application and fee to the TCEQ, receive the approval letter, then schedule and pass the Class D wastewater exam at a registered computer-based testing center.
Water or wastewater
Water and wastewater are separate Texas licenses with separate exams. Pick the one that matches the job you want; many operators eventually hold both. Our practice is scoped to each exam, never mixed.
Common questions
- Do I need experience?
- No, not for the entry-level Class D wastewater license.
- Is it the same as the water license?
- No. Water and wastewater are separate licenses and exams.
- Is the exam closed-book?
- Yes.