Wastewater Certification Review Classes and Online Exam Preparation
Prepare for your wastewater operator certification exam with confidence.
Approved Environment, Inc. provides online wastewater certification review classes, practice exams, mathematics training, and study materials for municipal, industrial, and activated sludge operators.
Study at your own pace while reviewing practical wastewater treatment concepts and the subjects commonly covered on state certification examinations.
Register for a Class View Practice ExamsWhy Wastewater Operators Choose Approved Environment
Practical Exam Preparation
Review treatment processes, laboratory procedures, wastewater mathematics, safety, maintenance, and troubleshooting topics that operators need to understand.
Flexible Online Study
Complete the material online from home or work and move through the courses at a pace that fits your schedule.
Experienced Instruction
Our study materials are based on decades of wastewater experience, operator instruction, certification preparation, and continuing education.
Choose Your Wastewater Certification Review Class
Select the review package or subject area that best matches your certification examination, current license, or training needs.
- Wastewater Certification Review - Municipal
- Wastewater Certification Review - Industrial
- Wastewater Certification Review - ASO
- Industrial Waste Treatment
- Non-Industrial Waste Treatment
- Wastewater Mathematics
- Laboratory Analysis
- Activated Sludge and Biological Process Control
- Solids Handling Operations
- Advanced Treatment
- Disinfection
- Operation and Maintenance
Wastewater Certification Review Classes
Wastewater Certification Review - Municipal
Prepare for a municipal wastewater certification examination by reviewing preliminary treatment, primary clarification, biological treatment, activated sludge, trickling filters, rotating biological contactors, sludge digestion, solids handling, final effluent, disinfection, laboratory procedures, and wastewater mathematics.
The package includes Wastewater Preliminary Treatment, Primary Treatment, Activated Sludge I and II, Aerobic and Anaerobic Sludge Digestion, Trickling Filters and RBCs, Final Effluent I and II, Disinfection by Chlorine, UV Disinfection, Solids Handling Alternatives, Solids Dewatering, Basic Mathematics, Wastewater Practice Problems, Laboratory Terms, Equipment and Sampling, and Laboratory Procedures for Plant Control.
Register NowWastewater Certification Review - Industrial
Review industrial wastewater streams, water use and reuse, waste segregation, metal-bearing wastes, neutralization, precipitation, biological treatment, filtration, nutrient removal, laboratory testing, and wastewater mathematics.
The package includes Industrial Waste Treatment I and II, Removing Metals from Wastewater, Trickling Filters and RBCs, Activated Sludge I and II, Sequencing Batch Reactors, Aerobic and Anaerobic Sludge Digestion, Air Stripping and Carbon Adsorption, Solids Handling Alternatives, Solids Dewatering, Basic Mathematics, Wastewater Practice Problems, Laboratory Terms, Equipment and Sampling, Laboratory Procedures for Plant Control, and Filtration.
Register NowWastewater Certification Review - ASO
Review the core subjects needed for ASO certification, including preliminary treatment, primary treatment, pumps and maintenance, final effluent, disinfection, solids dewatering, wastewater mathematics, sampling, and laboratory procedures.
Register NowWastewater Mathematics
Practice solving wastewater treatment plant calculations involving flow, grit channels, sedimentation tanks, clarifiers, trickling filters, activated sludge, chlorine dosage, chemical feed, loading rates, detention time, and design problems.
The package includes Basic Mathematics, Advanced Mathematics, Understanding Wastewater Mathematics, and Wastewater Mathematics Practice Problems.
Register NowIndustrial Waste Treatment
Study industrial discharge characteristics, pollution prevention, water reuse, waste segregation, metals treatment, cyanide destruction, neutralization, precipitation, coagulation, polymers, filtration, membrane technology, and odor control.
The package includes Industrial Waste Treatment I and II, Removing Metals from Wastewater, Air Stripping and Carbon Adsorption, Sequencing Batch Reactors, Chemistry I, Chemistry II, Filtration, Membrane Technology, and Odor Control.
Register NowNon-Industrial Waste Treatment
Review pretreatment, primary treatment, solids separation, biological treatment, final effluent, and disinfection processes used in municipal and non-industrial wastewater facilities.
The package includes Wastewater Preliminary Treatment, Primary Treatment, Biochemical Oxygen Demand Concept and Treatment, Activated Sludge I and II, Trickling Filters and RBCs, Final Effluent I and II, Disinfection by Chlorine, and UV Disinfection.
Register NowLaboratory Analysis
Learn quality control, equipment maintenance, calibration, reagent preparation, sampling, preservation, laboratory safety, documentation, and wastewater analysis procedures used to produce reliable data.
The package includes Laboratory Terms, Equipment and Sampling, Laboratory Procedures for Plant Control, BOD, DO and COD, and Ammonia, pH and Chlorine.
Register NowActivated Sludge and Biological Process Control
Review activated sludge microbiology, floc formation, process control, heavy-metal toxicity, nitrification, denitrification, bioaugmentation, solids loss, and troubleshooting.
The package includes Activated Sludge I and II, Biochemical Oxygen Demand Concept and Treatment, and Biological Nitrogen Removal.
Register NowSolids Handling Operations
Study solids concentration, secondary effluent solids removal, sludge stabilization, conditioning, digestion, filtration, and dewatering equipment and operations.
The package includes Solids Handling Alternatives, Solids Dewatering, Stabilization Versus Conditioning, Filtration, and Aerobic and Anaerobic Sludge Digestion.
Register NowAdvanced Treatment
Review advanced processes used to improve pollutant removal, including biological nitrogen removal, oxidation ditches, metals treatment, sequencing batch reactors, membranes, package plants, and settleability control.
Register NowDisinfection
Learn the principles of chlorine, ultraviolet irradiation, and ozone disinfection, including treatment effectiveness, byproducts, safety, and laboratory monitoring.
The package includes Disinfection by Chlorine, UV Disinfection, and Ozone Disinfection.
Register NowOperation and Maintenance
Study wastewater plant operation, clarifier optimization, pumps, preventive maintenance, septic systems, safety, odor control, and common operating problems.
The package includes Operation and Control of a Wastewater Treatment Plant, Clarifiers Optimization, Maintenance II/Pumps, Septic Systems and Their Maintenance, Safety, and Odor Control.
Register NowWastewater Certification Practice Exams
Multiple-choice questions can be challenging even when you understand the subject. Practice exams help you become familiar with the question format, identify areas that need more study, and improve your confidence before the state exam.
Wastewater Certification Review Textbook
The Wastewater Certification Review textbook covers municipal, industrial, laboratory, safety, mathematics, and technical topics related to operator certification.
The book includes 700 multiple-choice questions with answers and a final exam so operators can review, practice, and identify subjects that require additional study.
Frequently Asked Questions
How should I prepare for a wastewater certification exam?
Begin early, review each major treatment process, practice wastewater mathematics, and answer as many multiple-choice questions as possible. Practice helps you recognize how questions are written and how to select the best answer when several choices appear reasonable.
Are the wastewater certification review classes online?
Yes. The classes are completed online, allowing you to study from home or work and proceed at your own pace.
Which review class should I choose?
Choose the municipal, industrial, ASO, mathematics, laboratory, activated sludge, or other subject package that best matches your state examination and the areas in which you need additional preparation.
Do the classes include practice questions?
All courses include multiple-choice questions and review exercises. Separate wastewater certification practice exams are also available for additional preparation.
Can these courses be used for continuing education?
All Approved Environment courses are approved for continuing education in participating states. Click your State name below to enter the approved courses page. Water and Wastewater Continuing Education Courses are approved in the following states: Alabama, Arizona, California, Delaware, Indiana Wastewater , Indiana Water , Illinois, Ohio, Idaho, North Carolina, South Carolina, Nevada, Maryland, Louisiana, Tennessee, Virginia, West Virginia, Washington and Wisconsin. (If your state is not listed please check with your state before taking any courses).
How long should I study before the exam?
The amount of preparation depends on your experience, exam level, and familiarity with wastewater mathematics and treatment processes. A consistent study schedule over several weeks is usually more effective than trying to study everything immediately before the exam.
About Approved Environment, Inc.
Approved Environment, Inc. develops wastewater certification review courses, continuing education programs, practice examinations, and study materials for wastewater operators.
Our instruction emphasizes practical understanding, careful reading, problem solving, and the treatment concepts operators use in the field and encounter on certification examinations.
Questions about registration or selecting a course? Call 1-800-707-2137 or use our contact page.
Start Preparing for Your Wastewater Certification Exam
Choose the review class that matches your examination and begin studying online.
Register Online Practice Certification Exams