Answered
What jobs can you get with a Class D wastewater license?
A Class D wastewater license qualifies you for entry-level operator work at small wastewater collection and treatment systems: small-city utilities, water districts, and package plants. It is the first rung toward Class C, B, and A roles at larger plants, and the work is steady, essential public employment.
Last reviewed 2026-08-03
Where Class D operators work
Small wastewater systems across Texas need licensed operators: small municipal plants, utility districts, and standalone package plants. Many are steady public-sector jobs.
Room to grow
Class D is where you start earning the hours that qualify you for Class C, B, and A. Each grade opens larger plants and higher pay.
Common questions
- What size systems can I run?
- Small wastewater systems that call for a Class D operator.
- Is it stable work?
- Wastewater is essential public work, and many roles are public-sector.
- Can I earn more later?
- Yes, by moving up to Class C, B, and A.