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The County of DuPage
Wheaton, Illinois

Job Details for 3223 - Senior Wastewater Facilities Operator

Job Description

UNION: Local 399

Under general supervision; performs work of routine difficulty in the operation of a major wastewater treatment facility during an assigned shift; performs related work as required.

An employee in this class performs semiskilled work requiring the operation and maintenance of wastewater treatment plant processes and equipment, work is performed under the immediate supervision of a principle or chief operator.

The list of duties and responsibilities is illustrative only, and is not a comprehensive listing of all the duties and responsibilities performed by positions in this class.

• Ensures safe and efficient operation of plant processes, equipment and machinery through proper operation, routine checks, and ongoing maintenance.
• Draws samples of water and assists in performing laboratory tests and analyses.
• Notes changes in effluent and plant process characteristics and takes corrective action.
• Operates the facilities equipment, valves  pumps and associated equipment.
• Cleans the facilities machinery and removes sludge & debris accumulations.
• Adds chemicals according to prescribed standards.
• Maintains log of operations & interprets gauge & meter readings. Documents status of various processes and transmits data to superior.
• Performs routine chemical analyses of water.
• Housekeeping and general plant upkeep such as painting and grass cutting.
• Maintains regular attendance and punctuality.
• Trains and provides direction to employees in lower level operator / laborer positions.

• Adjusts work assignments and schedules in the event of an emergency to participate in emergency preparedness, response, and recovery activities as assigned.
• Depending on assignment may maintain required emergency management training, licensure and/or certifications.
• Performs related duties as required or assigned within job classification.
• Maintains a current knowledge of changes in technologies and environmental practices in the wastewater industry.

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and /or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

Knowledge of:
• Class A wastewater treatment plant operating practices including primary, secondary, tertiary biological and physical treatment processes, disinfection, sludge handling and treatment and disposal, aerobic and anaerobic digestion
• Wastewater laboratory testing procedures
• Good mechanical aptitude
• Current office practices, procedures, and equipment
• County policies and procedures
• Applicable federal, state, and local laws, rules, regulations, codes, and/or statutes
• Operational & safety procedures pertaining to wastewater treatment plant operations.

Skill in:
• Using computer hardware and software including work processing, spreadsheets, databases, email, etc.
• Operating a wastewater treatment facility
• Performing routine repairs to machinery and makes adjustments to process controls
• Using computer hardware and software including word processing, spreadsheets, databases, email, etc
• Applying an acquired knowledge of procedures, rules, regulations and services applicable to the assigned office

Ability to:
• Effectively use computer and SCADA system
• Manage projects and multiple priorities simultaneously
• Establish and maintain effective working relationships with department and division staff, other departments and others, such as vendors
• Communicate and use interpersonal skills to interact with coworkers, supervisor, the general public, etc. to sufficiently exchange or convey information and to receive work direction
• Ensure compliance with applicable federal, state, and local laws, rules, and regulations
• Convey excellent oral and written communication
• Work effectively under stress
• Maintain confidentiality


Completion of two high school level course in chemistry and biology, and four years of experience operating a sewage treatment plant; or an equivalent combination of training and experience.

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this job, the employee is regularly required to stand, walk, and use hands and/or arms to operate tools and equipment.

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

The work will occur in both a field environment and inside a wastewater treatment facility. The work environment for this position regularly includes working near moving mechanical parts, with hazardous chemicals, and with fumes or airborne particles typical of a wastewater treatment facility in inclement weather conditions.

This position requires a minimum of an Illinois Class 2 Wastewater Operators Certificate and a valid Illinois driver's license.