Texas Water Operator Certification Guide
By Heather Heltzinger · March 2026
Overview
Texas operator licensing is administered by the Texas Commission on Environmental Quality (TCEQ) Operator Licensing Program. With over 7,000 public water systems, Texas has one of the most complex licensing landscapes in the country.
Texas uses separate tracks for surface water treatment versus groundwater/distribution. Many operators hold multiple license types. Reciprocity exists in some cases — but Texas-specific requirements and exams still apply.
TCEQ: 512-239-6185 · tceq.texas.gov/licensing
License types
- Water Treatment (WT) — Surface water plants. Class D through A (D = entry, A = highest).
- Water Distribution (WD) — Distribution systems. Class I through IV.
- Wastewater (WW) — Separate track with its own class structure.
Surface water treatment classes
| Class | Level | Requirements |
|---|---|---|
| Class D | Entry | Smallest surface water systems; pass exam |
| Class C | Intermediate-Low | Experience at Class D + exam |
| Class B | Intermediate-High | Experience at Class C + exam |
| Class A | Advanced | Extensive Class B experience + exam |
Groundwater & distribution classes
| Class | Level | Requirements |
|---|---|---|
| Class I | Entry | Smallest systems; pass exam |
| Class II | Intermediate | Class I experience + exam |
| Class III | Advanced | Class II experience + exam |
| Class IV | Expert | Class III experience + exam |
Experience & application
Experience must be at a permitted public water system, verified by your employer. Keep your own employment records and operator logs.
- Download application from TCEQ Operator Licensing page
- Complete experience verification with employer(s)
- Submit with fee to TCEQ
- Receive exam authorization, schedule and pass TCEQ exam
- License issued upon approval
Exam & renewal
TCEQ administers Texas-specific exams covering 30 TAC Chapter 30 and technical operations. Study 30 TAC Chapter 290 (Public Drinking Water) for your track.
Licenses renew every 3 years with 30 CEUs required. TWUA and Texas Section AWWA offer approved training.
Study resources
- TCEQ official study references (download first)
- 30 TAC Chapter 290 — public drinking water rules
- AWWA Texas Section · Texas Water Utilities Association (TWUA)
- RandyAI — ask about TCEQ classes, 30 TAC, and exam prep
Randy can walk you through requirements, exam math, and what experience counts.