The qualifications you need to get a job in environmental service differ depending on the role. Positions in this field include pollution control and prevention professionals, safety compliance inspectors, and professionals that properly dispose of waste materials (including those found in a health care facility). If you want to design water systems, sewers, and wastewater treatment facilities, you need a bachelor’s or master’s degree in civil engineering or a closely related subject. A maintenance technician typically needs an associate’s degree and specialized training. Additional certification may be required for any environmental service professional who works with hazardous materials.