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Exam Prep

Advanced Water Treatment Operator (AWTO)

Membrane Filtration

Membrane filtration is a vital process in water treatment, used to remove contaminants and impurities from both drinking water and wastewater. This technology employs semi-permeable membranes to filter out particles, bacteria, and dissolved salts, ensuring high water quality. From microfiltration to reverse osmosis, membrane systems play a key role in pre-treatment, pathogen removal, and desalination. Proper maintenance is essential to prevent fouling and scaling, ensuring the long-term efficiency and safety of these systems.


  1. Overview Available Now
  2. Membrane Process and Mechanisms Available Now
  3. Application in Water Treatment Available Now
  4. Maintenance and Troubleshooting Available Now
  5. Components and Configurations Available Now
  6. System Performance Monitoring Available Now
  7. Safety Protocols Available Now


Ozone Disinfection

This module covers the essential role of ozone in water treatment, focusing on disinfection, oxidation, and system operation. It explains ozone chemistry, advanced oxidation processes, and system design while highlighting key safety protocols. Operators will learn about monitoring, maintenance, troubleshooting, and the calculations needed for optimal system performance. The module equips operators with the knowledge necessary to manage ozone systems effectively and ensure regulatory compliance.


  1. Overview Available Now
  2. Ozone Chemistry and Reactions Available Now
  3. Application in Water Treatment Available Now
  4. Monitoring and Maintenance Available Now
  5. System Design and Operations Available Now
  6. Safety Protocols Available Now
  7. Troubleshooting Available Now
  8. System Performance Calcs Available Now


Biologically Activated Carbon

Explore the essential role of Biological Activated Carbon (BAC) in advanced water treatment systems. This comprehensive guide covers BAC's dual filtration and biodegradation capabilities, its application in removing organic contaminants, and its importance in potable reuse. Learn about system components, performance indicators, and key maintenance practices for ensuring long-term system efficiency. Whether you're focused on regulatory compliance or optimizing BAC for membrane filtration, this resource provides valuable insights for water treatment professionals.


  1. Overview Available Now
  2. BAC Theory & Principles Available Now
  3. System Components & Configuration Available Now
  4. BAC Filtration Process and Performance Indicators Available Now
  5. Applications of BAC in Water Treatment and Reuse Available Now
  6. BAC System Operation and Maintenance Available Now
  7. Calculations and Math Problems Available Now
  8. Safety and Handling of BAC Systems Available Now
  9. Advanced Topics in BAC Systems Available Now
  10. Glossary Available Now