Profession wastewater treatment operator

Wastewater treatment operators operate equipment used in a water or wastewater plant. They treat and clean drinking water before it is distributed to the consumer and process wastewater to remove harmful substances before returning it to rivers and seas. They take samples and perform tests to analyse the water quality.

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Personality Type

  • Enterprising / Realistic
  • Realistic / Conventional


  • Water chemistry analysis

    Principles of complex water chemistry.


  • Perform water chemistry analysis

    Perform water chemistry analysis

  • Interpret scientific data to assess water quality

    Interpret biological and physico-chemical data to assess water quality.

  • Carry out waste water treatment

    Perform waste water treatment according to regulations checking for biological waste and chemical waste.

  • Perform water treatments

    Perform regularly water testing, ensuring that water management and filtration processes follow reasonable management practices, industry standards, or commonly accepted farming practices. Record previous water contaminations, the source of contamination and contamination remedied. Take mitigation measures to guard against further contamination.

  • Operate water purifying equipment

    Operate and adjust equipment controls to purify and clarify water, process and treat wastewater, air and solids, recycle or discharge treated water, and generate power.

  • Perform water treatment procedures

    Perform operations such as filtering, sterilising, and dechlorinating in order to purify water for consumption and food production using different procedures and technologies such as micro-filtration, reverse osmosis, ozonation, carbon filtration, or ultraviolet (UV) light.

  • Measure water quality parameters

    Measure water quality parameters: temperature, oxygen, salinity, pH, N2, NO2,NH4, CO2, turbidity, chlorophyll. Monitor microbiological water quality.

  • Document analysis results

    Document on paper or on electronic devices the process and the results of the samples analysis performed.

  • Dispose of sewage sludge

    Operate equipment to pump the sewage sludge and store it into containers in order to transform the gases it emits into energy. After this phase, dry the sludge and evaluate its potential reuse as fertilizer. Dispose of the sludge if it contains hazardous elements.

  • Monitor water quality

    Measure water quality: temperature, oxygen, salinity, pH, N2, NO2,NH4, CO2, turbidity, chlorophyll. Monitor microbiological water quality.

  • Use water disinfection equipment

    Operate water disinfection equipment, using mechanical filtration, biological filtration, UV disinfection and ozonation as needed.

  • Maintain water treatment equipment

    Perform repairs and routine maintenance tasks on equipment used in the purification and treatment processes of water and waste water.

Optional knowledge and skills

maintain water distribution equipment ensure compliance with environmental legislation ensure proper water storage ensure equipment maintenance maintain desalination control system apply health and safety standards test samples for pollutants perform sample testing water policies maintain specified water characteristics operate hydraulic machinery controls water reuse operate sewage treatment plans on ships use personal protection equipment prepare samples for testing operate pumping equipment manage desalination control system laboratory techniques

Common job titles

  • Waste water treatment plant operator a
  • Operator, water and wastewater treatment
  • Licensed operator
  • Wastewater treatment lead operator
  • Wastewater operations supervisor
  • Operations supervisor ii- public works, utilities/water reclamation
  • Serf operator (facility operator 3)
  • Plant operator trainee
  • Water reclamation plant operator iii
  • Chief operator ww treatment plant