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Details for Water and Liquid Waste Treatment Plant and System Operators


Operate or control an entire process or system of machines, often through the use of control boards, to transfer or treat water or liquid waste.


  • Add chemicals such as ammonia, chlorine, or lime to disinfect and deodorize water and other liquids.
  • Operate and adjust controls on equipment to purify and clarify water, process or dispose of sewage, and generate power.
  • Inspect equipment or monitor operating conditions, meters, and gauges to determine load requirements and detect malfunctions.
  • Collect and test water and sewage samples, using test equipment and color analysis standards.
  • Record operational data, personnel attendance, or meter and gauge readings on specified forms.
  • Maintain, repair, and lubricate equipment, using hand tools and power tools.
  • Clean and maintain tanks and filter beds, using hand tools and power tools.
  • Direct and coordinate plant workers engaged in routine operations and maintenance activities.


  • Realistic - Realistic occupations frequently involve work activities that include practical, hands-on problems and solutions. They often deal with plants, animals, and real-world materials like wood, tools, and machinery. Many of the occupations require working outside, and do not involve a lot of paperwork or working closely with others.
  • Conventional - Conventional occupations frequently involve following set procedures and routines. These occupations can include working with data and details more than with ideas. Usually there is a clear line of authority to follow.

Education, Training, Experience

  • Education - Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.
  • Training - Employees in these occupations usually need one or two years of training involving both on-the-job experience and informal training with experienced workers. A recognized apprenticeship program may be associated with these occupations.
  • Experience - Previous work-related skill, knowledge, or experience is required for these occupations. For example, an electrician must have completed three or four years of apprenticeship or several years of vocational training, and often must have passed a licensing exam, in order to perform the job.


  • Psychology - Knowledge of human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders.
  • Law and Government - Knowledge of laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process.
  • Production and Processing - Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
  • Design - Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.
  • English Language - Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar.
  • Biology - Knowledge of plant and animal organisms, their tissues, cells, functions, interdependencies, and interactions with each other and the environment.
  • Chemistry - Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods.
  • Computers and Electronics - Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
  • Building and Construction - Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.
  • Public Safety and Security - Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.
  • Mathematics - Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.
  • Physics - Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub- atomic structures and processes.
  • Education and Training - Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.


  • Monitoring - Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.
  • Operation Monitoring - Watching gauges, dials, or other indicators to make sure a machine is working properly.

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  • Plating and Coating Machine Setters, Operators, and Tenders, Metal and Plastic
  • Pump Operators, Except Wellhead Pumpers
  • Textile Bleaching and Dyeing Machine Operators and Tenders
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