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Water and Wastewater Treatment Plant and System Operators

SOC 51-8031.00Job Zone 2 · Some Preparationv.26.05

Context coveredThis framework covers the full range of competencies for water and wastewater treatment plant and system operators working in public utilities, from entry-level sample collection and data logging through senior process optimization and emergency management to executive-level workforce development, compliance oversight, and organizational leadership.

Sources:O*NET v30.2O*NET Resource Center — Occupational Information Network, v30.2 (Sept 2025). Opens in new tab.SkillsCrosswalkSkillsCrosswalk — O*NET enrichment + adjacency index. Opens in new tab.
Emerging
Entry / Apprentice
  1. Water and sewage samples — collect and label under direct supervisor guidance at a municipal treatment facility.
  2. Test equipment and color analysis standards — apply to perform basic water quality checks on shift under close oversight.
  3. Operational data forms and meter readings — record accurately on standardized log sheets with supervisor verification.
  4. Chemical addition procedures for chlorine and lime — follow written protocols under direct supervision in a treatment plant setting.
  5. Plant meters and gauges — read and report observed values to a lead operator during routine shift walkthroughs.
  6. Hand tools and basic cleaning implements — use to clean filter beds and tank surfaces as directed by a senior operator.
  7. Equipment lubrication schedules — follow step-by-step instructions to apply lubricants to designated machinery under supervision.
  8. Plant safety rules and personal protective equipment — demonstrate correct use during entry-level orientation at a water treatment facility.
  9. Compliance software and paper log templates — enter shift data into designated fields with guidance from a supervising operator.
  10. Oral instructions from supervisors — listen and confirm understanding before performing assigned tasks on the plant floor.
Developing
Mid-level / Established
  1. Water and sewage sample test results — analyze independently using color analysis standards and compare against regulatory benchmarks on routine shifts.
  2. Equipment control panels and process controls — adjust with reduced oversight to maintain flow rates and treatment levels within normal operating parameters.
  3. Operational logs, gauge readings, and personnel attendance records — complete accurately and consistently across full shifts at a water or wastewater plant.
  4. Chlorine, ammonia, and lime dosing equipment — operate and calibrate to meet disinfection targets under standard plant conditions.
  5. Malfunctions and load requirement changes — detect by monitoring gauges, meters, and equipment indicators during routine operations and escalate appropriately.
  6. Hand tools and power tools — use to perform scheduled maintenance, minor repairs, and lubrication tasks with minimal direct supervision.
  7. Filter beds and sedimentation tanks — clean and inspect on a recurring maintenance schedule, documenting findings in plant records.
  8. Industrial control software and spreadsheet software — enter, retrieve, and organize process data to support daily operational reporting.
  9. Troubleshooting steps for common equipment failures — apply systematically to restore normal operations during low-complexity incidents.
  10. Verbal shift handoffs with incoming operators — conduct clearly and completely to ensure continuity of plant operations.
Proficient
Senior / Expert IC
  1. Complex water and sewage quality deviations — diagnose by interpreting test data and adjusting chemical dosing or process controls autonomously across full treatment cycles.
  2. Plant equipment controls for purification, clarification, and solids disposal — operate and fine-tune to optimize performance under variable influent conditions without oversight.
  3. Non-routine operational events and equipment malfunctions — troubleshoot using deductive reasoning and mechanical knowledge to restore compliance with minimal downtime.
  4. Chemical treatment strategies for disinfection and odor control — evaluate and modify based on seasonal variation, regulatory limits, and incoming water quality at a public utility.
  5. Maintenance and repair tasks for pumps, valves, and mechanical systems — execute using hand and power tools, following manufacturer specifications and plant safety standards.
  6. Compliance software, GIS tools, and database interfaces — use proficiently to track operational data, generate required regulatory reports, and identify process trends.
  7. Quality control analyses of treatment outputs — perform and interpret independently, recommending process adjustments to meet public health and environmental standards.
  8. Inspection findings from tanks, filter beds, and distribution infrastructure — document in detail and use to prioritize corrective maintenance actions.
  9. Regulatory requirements under applicable water and environmental law — apply accurately in daily operations decisions and incident documentation.
  10. Shift scheduling conflicts and multi-task priorities — manage independently using time management and critical thinking to maintain continuous plant operation.
Advanced
Lead / Principal / Executive
  1. Plant-wide operational standards and procedures — develop and implement to ensure regulatory compliance and treatment efficiency across all shifts at a large water or wastewater facility.
  2. Routine and emergency plant operations workforce — direct, coordinate, and evaluate to sustain safe, effective treatment system performance at organizational scale.
  3. Capital maintenance plans and equipment replacement strategies — lead development of using engineering knowledge and long-term operational data for utility management.
  4. Training programs for new and developing plant operators — design and deliver using adult learning principles to build competency across the workforce.
  5. Cross-departmental and regulatory agency relationships — manage through clear communication and negotiation to represent plant operations interests at a public utility.
  6. Process improvement initiatives for chemical usage, energy consumption, and waste reduction — lead using complex problem-solving and systems-level analysis of plant performance data.
  7. Emergency response and contingency plans for treatment failures or contamination events — author and execute to protect public safety and maintain regulatory standing.
  8. Compliance reporting and public safety documentation — oversee preparation and submission to ensure accuracy and timeliness under applicable law and government frameworks.
  9. Advanced industrial control software and enterprise data systems — direct configuration and integration to enhance operational monitoring and management decision-making.
  10. Organizational culture of attention to detail, integrity, and safety — model and reinforce through daily leadership behaviors and formal performance management at the plant level.

AI-at-Work Competency Framework

Sources:Anthropic Economic IndexAnthropic Economic Index — release_2026_03_24. Opens in new tab.Jadhav & Danve, 2026Skill Automation Feasibility Index — Jadhav & Danve, 2026 (arXiv:2604.06906). Opens in new tab.WEF Skills TaxonomyWEF Skills Taxonomy 2021 — Building a Common Language for Skills at Work. Opens in new tab.

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  1. Emerging
  2. Developing
  3. Proficient
  4. Advanced
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Pathsmith™ Durable Skills Framework

Sources:Pathsmith™ Durable SkillsPathsmith™ Durable Skills Framework — America Succeeds + CompTIA. Opens in new tab.O*NET v30.2O*NET Resource Center — Occupational Information Network, v30.2 (Sept 2025). Opens in new tab.
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Show O*NET source anchors63 anchors · skillscrosswalk.com

O*NET enrichment · skillscrosswalk.com

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Source anchors that ground each statement

Related titles
Water Treatment Plant Operator · Basin Tender · Biosolids Management Technician (Biosolids Management Tech) · Clarifying Plant Operator · Disposal Operator · Disposal Plant Operator · Drinking Water Technician (Drinking Water Tech) · Filter Tender · Filterer · Filtration Operator · Filtration Plant Operator · Industrial Waste Treatment Technician (Industrial Waste Treatment Tech)
RAPIDS apprenticeships
0147 · Water Treatment Plant Operator
O*NET skills
Operation and ControlOperations MonitoringMonitoringActive ListeningSpeakingTroubleshootingRepairingQuality Control AnalysisEquipment MaintenanceCoordinationComplex Problem SolvingJudgment and Decision MakingReading ComprehensionTime ManagementCritical Thinking
Knowledge domains
Public Safety and SecurityMechanicalEnglish LanguageChemistryAdministration and ManagementEducation and TrainingMathematicsCustomer and Personal ServiceComputers and ElectronicsLaw and GovernmentEngineering and TechnologyBiologyAdministrativeProduction and Processing
Abilities
Oral ComprehensionOral ExpressionNear VisionWritten ComprehensionDeductive ReasoningSelective AttentionControl PrecisionProblem SensitivityInductive ReasoningInformation Ordering
Work styles
Attention to DetailCautiousnessDependabilityIntegrityStress ToleranceCooperation
Technology
Compliance softwareData base user interface and query softwareGeographic information systemIndustrial control softwareSpreadsheet softwareOffice suite softwareElectronic mail softwarePresentation softwareWord processing softwareOperating system software
Tasks · seed anchors for statements
  1. Collect and test water and sewage samples, using test equipment and color analysis standards.
  2. Operate and adjust controls on equipment to purify and clarify water, process or dispose of sewage, and generate power.
  3. Record operational data, personnel attendance, or meter and gauge readings on specified forms.
  4. Add chemicals, such as ammonia, chlorine, or lime, to disinfect and deodorize water and other liquids.
  5. Inspect equipment or monitor operating conditions, meters, and gauges to determine load requirements and detect malfunctions.
  6. Direct and coordinate plant workers engaged in routine operations and maintenance activities.
  7. Clean and maintain tanks, filter beds, and other work areas, using hand tools and power tools.
  8. Maintain, repair, and lubricate equipment, using hand tools and power tools.
CIP education codes
15.0506

Sources: O*NET v30.2 (CC BY 4.0), SkillsCrosswalk.com, LER.me®, Anthropic Economic Index, SAFI (Jadhav & Danve, 2026), WEF Skills Taxonomy 2021, Pathsmith™ Durable Skills Framework. © 2026 EBSCOed.