Texas · Water Treatment
Texas Water Treatment Operator Certification Exam
In Texas, water treatment operators are certified by Texas Commission on Environmental Quality (TCEQ). Here's exactly what the exam covers, how the grade levels work, and how to pass the first time.
Applied math is a significant part of the Texas water treatment exam.
Practicing calculations like dosage, detention time, and loading before test day is one of the most effective ways to prepare, alongside reviewing your state’s official exam content outline.
Texas exam logistics
| Certifying agency | Texas Commission on Environmental Quality (TCEQ) |
|---|---|
| Exam administered by | TCEQ (administered at approved testing centers) |
| Renewal cycle | 3 years |
| Continuing education | Water/wastewater: 30 training hours (3.0 CEUs) per 3-year renewal for most classes; Class A/B may require more. |
Texas water treatment grades
Texas uses its own grade nomenclature. Pick your level for exam specifics and practice questions.
What the exam covers
- Coagulation and flocculation
- Sedimentation and clarification
- Filtration (conventional, direct, membrane)
- Disinfection and disinfection byproducts
- Corrosion control and stabilization
- Source water and watershed protection
- Regulations (Safe Drinking Water Act, SWTR)
- Safety, security, and emergency response
The math on the Water Treatment exam
These calculations are commonly included in water treatment operator exam preparation and may appear on your exam depending on your certification level and state. Practicing them is one of the most effective ways to prepare.
- Chemical dosage (mg/L to lbs/day)
- Chlorine demand and CT calculations
- Detention time
- Filter loading and backwash rate
- Flow rate and velocity
- Percent strength of solutions
Free water treatment practice questions
Sample questions with full explanations for every grade.
Take the practice quiz →Frequently asked questions
- What are the water treatment operator grades in Texas?
- In Texas, water treatment operators are certified as Class D, Class C, Class B, Class A. These correspond to the national Grade 1 through Grade 4 progression.
- Who certifies water treatment operators in Texas?
- Texas Commission on Environmental Quality (TCEQ) certifies water treatment operators in Texas. The written exam is administered by TCEQ (administered at approved testing centers).
- What is on the Texas water treatment operator exam?
- The exam covers Coagulation and flocculation, Sedimentation and clarification, Filtration (conventional, direct, membrane), Disinfection and disinfection byproducts, and more — plus applied math such as Chemical dosage (mg/L to lbs/day), Chlorine demand and CT calculations, Detention time.
- How do I renew a water treatment certification in Texas?
- Texas certifications renew every 3 years. Water/wastewater: 30 training hours (3.0 CEUs) per 3-year renewal for most classes; Class A/B may require more.