Wastewater Treatment Plant Operator - East

Department of Public Works – Water & Sewer Division

The City of Marlborough’s Department of Public Works is seeking to fill the full-time (40 hours) position of Wastewater Treatment Plant Operator in our East Plant.

Posting Number: AA26-26

Date Posted: April 22, 2026

Weekly

Hours:

40 hours per week

FLSA: Non-Exempt

Hiring Rate: $35.22/
hour

Bargaining Unit: DPW Engineers, Local 272

Step Rate: $35.22 – 39.61/
hour

Interested candidates should forward a cover letter and resume to:

To apply , please complete a City of Marlborough Employment Application and send it along with a cover letter and resume to: (Use the "Apply for this Job" box below).

The position will remain open until filled. Applications will be reviewed on a rolling basis.

Operation of a municipal 3.5 MGD advanced wastewater treatment facility in a safe, cost effective, and efficient manner complying with all State and Federal regulations.

• Operating, maintaining, and repairing wastewater treatment plant machinery and equipment.
• Making routine laboratory tests and maintaining operations log.
• Adding chemicals as directed and required.
• Recording instrument readings and adjusting equipment.
• Checking machinery and equipment for malfunctions and conducting preventative maintenance.
• Repairing and overhauling machinery and equipment.
• Maintaining plant facilities and grounds in a clean and orderly condition.
• Completing tasks and other duties as assigned by the Head Treatment Plant Operator and other supervisory personnel.

Under the supervision of the Head Treatment Plant Operator.

The work involves numerous standardized practices, procedures, or general instructions that govern the work and, in some cases, may require additional interpretation. Judgment is needed to locate, select and apply the most pertinent practice, procedure, regulation or guideline.

The work consists of a variety of duties which generally follow standardized practices, procedures, regulations or guidelines. The sequence of work and/or the procedures followed vary according to the nature of the transaction and/or the information involved, or sought, in a particular situation.

Relationships are primarily with co‑workers, vendors and the public, involving frequent explanation, discussion or interpretation of practices, procedures, regulations or guidelines in order to render service, plan or coordinate work efforts, or resolve operating problems. Other regular contacts are with service recipients and employees of outside organizations. More than ordinary courtesy, tact and diplomacy may be required to resolve complaints or deal with hostile, uncooperative or uninformed persons.

Work is continually performed outdoors regardless of weather conditions. The nature of the duties may involve continuous presence of unpleasant or irritating elements such as exposure to equipment/machinery, noise, odors, chemical fumes, dust, smoke, heat, cold, oil, dirt or grease, and risk of personal injury. May be required to work weekends and holidays and in emergency situations once deemed qualified to do so.

High school diploma or equivalent; two or more years working experience at a Publicly Owned Treatment Works (POTW); two or more years working experience maintaining equipment such as pumps, filters, valves, gates, and tanks; or any equivalent combination of education and experience.

Special Requirements: Massachusetts Wastewater Treatment Plant Operators Certification, Grade 4M Full. For the purposes of application, Grade 4M License, Operator‑in‑Training Status as a Grade 4M Operator as well as When and If Status as a Grade 4M treatment plant operator as defined in CMR 2.06 (1) and (2), will be considered acceptable minimum qualifications.

Knowledge
:
Thorough knowledge of the methods, materials, scheduling, tools, and equipment used in the operation of a wastewater treatment facility. Working knowledge of the hazards and safety precautions common to a wastewater treatment facility.

Abilities
:
Ability to operate all equipment in facility including but not limited…