Wastewater Treatment Plant Operator IV - BC-
Listed on 2026-09-16
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Trades / Skilled Labor
Maintenance Technician / Mechanic, Wastewater Treatment -
Engineering
Maintenance Technician / Mechanic, Wastewater Treatment
Independently operates and maintains one or more Class I, II, III, or IV wastewater treatment plants and lower classed plants, as well as tributary pumping plants; participates in the major overhaul, repair, and installation of treatment and pumping plant equipment; and performs other related duties as required.
This level is characterized by its primary responsibility for operating and being in direct responsible charge of a Class IV wastewater treatment plant, as rated by the State Board of Certification of Operating Personnel in Wastewater Treatment Facilities.
There are five immediate vacancies with the Department of Environmental Management
- Wastewater Division:
- three (3) permanent full-time vacancies in Hilo
- two (2) permanent full-time vacancies in Kailua-Kona
The eligible list may be used for other permanent and temporary vacancies as they arise during the life of the list. Temporary appointment may lead to conversion to permanent appointment.
Special Working ConditionsExposure to hazardous, filthy, and/or obnoxious conditions; may also be subject to shift, weekend, and holiday work as required. Applicants must be available for stand-by duty and be available for immediate response in case of emergency.
- Operates and maintains wastewater treatment and tributary pumping plants to ensure the safe, effective, efficient, and economical use of processes and equipment, and to comply with pertinent County, State, and Federal regulations.
- Operates various equipment to regulate the flow of wastewater, air, and sludge between the unit processes of the plant.
- Reads and records readings from meters, gauges, and other recording devices and interprets data to maintain or improve plant operations.
- Inspects plant and mechanical equipment for malfunctions, irregularities, and needed repairs.
- Lubricates, changes oil and makes running repairs and adjustments to machinery and equipment.
- Participates in the installation, overhaul, and major repair of treatment and pumping plant equipment.
- Drains and cleans settling tanks, clarifiers, chlorinating chambers, digesters, and aeration tanks.
- Maintains sludge digestion systems, dewatering equipment, drying beds, and pulverizers.
- Collects samples of raw, partially treated, and treated wastewater and sludge and performs chemical and physical analyses thereof, including settable solids, settle ability, pH, chlorine residual, B.O.D., C.O.D., dissolved oxygen, and suspended solids.
- Interprets laboratory results and makes appropriate process adjustments.
- Maintains records of test results, data sheets, and reports.
- Paints equipment, buildings, and structures.
- Keeps station logs and prepares operational reports.
- May be assigned to work in other plants for training and development purposes and to qualify for higher level certification.
- May be assigned to work at pumping plants or to perform other related duties as necessary.
- Attends employee safety and training sessions.
- Complies with all Federal, State, and County laws, regulations, and policies relating to occupational safety and health, and environmental issues.
- Operates a motor vehicle to transport personnel, equipment, and material.
- Performs other related duties as assigned.
- Experience and/or training of sufficient scope and quality to competently perform the journey level skills and duties of a Wastewater Treatment Plant Operator IV.
- possession of a current Hawaiʻi Mandatory Wastewater Treatment Plant Operator Grade IV Certificate at time of filing (scan and attach a copy of your current certificate to your application), and
- possession of a valid State of Hawaiʻi driver's license (Class
3) or any other valid comparable driver’s license at time of filing, (You will be required to submit your valid driver's license at time of hire.), and - possession a good driving record certified by a traffic abstract confirming no DUI convictions, license revocations, or suspensions for three (3) years preceding and no moving violations for one (1) year preceding. A current traffic abstract is valid for 30 days from date of issuance by the district court. (You will be required to submit your current traffic abstract at time of job interview.)
- a valid State of Hawaiʻi Driver License (Class 4, non‑CDL) prior to completion of probation, and
- as applicable to the position, possession of a current Department of Transportation Medical Examiner's Certificate prior to appointment. (The immediate vacancies with the Department of…
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