Texas Wastewater Treatment Plant Operator Class D Contractor License

The Wastewater Treatment Plant Operator Class D Contractor License permits those who hold it to participate and demonstrate knowledge of the following activities and subjects:

• Recognition of hazards for wastewater collection and treatment personnel, and be able to work safely without constant supervision
• Control of wastewater discharges to the waters of the state
• Effects of infiltration and inflow and industrial wastes on various collection and treatment processes
• General characteristics of wastewater and its effects on public health and the environment
• Purpose and functioning of adequate laboratory testing for proper control of wastewater treatment processes
• Geometric and algebraic math calculations related to wastewater flow, collection, pumping, and treatment
• Management theory and techniques as applied in the wastewater utility discipline
• Methods of thickening, dewatering, and stabilization of wastewater sludges
• Process control of various modes of wastewater treatment
• Relative merits of various sludge treatment and disposal methods and equipment
• Requirements of the TCEQ’s system for waste discharge permits and self-reporting
• Safety practices for wastewater collection and treatment personnel
• Sampling and analysis requirements and procedures for sludges, biosolids, and soil samples
• Testing techniques utilized to control various modes of wastewater treatment
• Solution of both geometric and algebraic problems with extraneous data in problem statement in applications to wastewater flow, pumping, and treatment situations
• Definition, source, estimated quantity, basic physical and chemical composition, reasons for collection and treatment, and basic effects of untreated or partially treated effluents on receiving streams
• Design criteria for sewerage systems in Texas which set minimum standards for design and construction of wastewater collection, pumping, treatment, and disposal systems
• TCEQ’s recommended minimum process-control tests for domestic wastewater treatment facilities
• Wastewater:

  • Collection system facility components, materials of construction, construction practices, operation and maintenance
  • Preliminary treatment facilities, operation, and maintenance
  • Pumps and motors, pumping installations, operation and maintenance
  • Monitoring, sampling, testing, analysis, instrumentation, equipment and techniques
• Characteristics of:

  • Chlorination and dechlorination processes and equipment, and alternative methods of disinfection
  • Digested biosolids, and methods of disposal or alternative use
  • Treated wastewater effluents from secondary processes, methods of disposal or reuse, sampling and testing requirements and procedures for disposal by irrigation or to surface waters of the state
• Characteristics, operation and maintenance of:

  Various types of wastewater lagoons and treatment ponds
  • Aerobic and anaerobic sludge-digestion processes
  • Various types of trickling filters and RBC units and modes of activated sludge treatment processes
  • Primary treatment processes and equipment. (Including Imhoff tanks)

How to Get the Wastewater Treatment Plant Operator Class D Contractor’s License in Texas?

1. Meet the education requirement which is High School Diploma or a General Equivalency Diploma
2. Submit an online Wastewater Operator Application Form and license fee to the TCEQ
3. Register for an exam at your Local TCEQ Regional Office or your Local Computer-Based Testing Center
4. Expect a response from the Texas Commission on Environmental Quality (TCEQ) after the validation of the process

Texas Wastewater Treatment Plant Operator Class D Contractor License Exam Prep Course

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Texas Wastewater Treatment Plant Operator Class D Contractor License Exam

Below is all the information related to the trade exam, including the official reference list. Before candidates are allowed to take the computer-based test, they must first comply with the criteria to receive pre-approval from the Texas Commission on Environmental Quality. After receiving clearance, applicants can take four tests during a one-year approval period (the initial test plus up to three retests) at the Registered Test Center. If the candidate is ineligible to retake the examination, access to the licensing test will not be granted. Depending on the test site, applicants that fail to pass the initial test may retest it once right away but must come back on a different day to attempt the remaining three out of their four chances.

Texas Wastewater Treatment Plant Operator Class D Contractor Trade Exam

• Testing Method: Computer-based; closed book
• Testing Company: TCEQ
• Time Allowed: 3 Hours
• Subjects Involved:
  • Statutes and Rules
  • Permits
  • Design Criteria
  • Safety
  • Laboratory
  • Management
  • General Knowledge
  • Collection
  • Pumping
  • Preliminary Treatment
  • Primary Treatment
  • Ponds
  • Trickling Filters
  • Ponds
  • Activated Sludge
  • Process Control
  • Disinfection
  • Sludge Digestion
  • Biosolids Disposal
  • Effluent Disposal
  • Math Problems
• TCEQ Wastewater Treatment Plant Operator Class D Official Content Outline

Texas Wastewater Treatment Plant Operator Class D Contractor Book Set

This set of books includes all required references for the Wastewater Treatment Plant Operator Class D exam. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

Texas Wastewater Treatment Plant Operator Class D Contractor Exam Books

Book Not Allowed in Testing

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