Environmental engineering technicians need knowledge in the following areas:

• Engineering and Technology: How to use computers and rules of engineering to design and produce goods and services.
• Mathematics: The rules and uses of numbers.
• Customer and Personal Service: Providing special services to customers based on their needs.
• English Language: The meaning and use of the English language.
• Chemistry: The properties of substances and the changes that occur when they interact.
• Mechanical: The design, use, and repair of machines and tools.
• Physics: The features and laws of matter and energy.
• Public Safety and Security: How to protect people and property.