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Maine Center for Disease Control & Prevention

A Division of the Maine Department of Health and Human Services

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How to Become a Licensed Operator and Advance within the Profession

How to Become a Licensed Water Operator and Advance Within the Profession



Page Index

Levels of Water Operator Licensure

Characteristics of a Water Operator

Education & Experience

Examinations

Licensure

Reciprocity

For More Information


 

Levels of Water Operator Licensure

Water systems are defined through a process of grading points – Class I to IV in both treatment and distribution categories – based on system complexity and the population served. Operators of these systems must show competency by...

  1. Successfully completing examinations in both treatment and distribution categories and
  2. Accruing the appropriate experience.

The Very Small Water System (VSWS) classification covers Operator requirements in both treatment and distribution for systems with a population of less than 500.

 

Characteristics of a Water Operator

A Water Operator must possess the knowledge, skills, ability and judgment to assure safe drinking water. This is measured via examination as well as through reviews of education and experience.

 

Education & Experience

Licensed Water Operators must have a high school diploma or GED. Experience is based on work in a public water system as well as credit for related professions. The Board offers Operator-in-Training (OIT) license status for persons that have successfully passed examinations but have not achieved the required experience. Holding an OIT license shows employers or prospective employers that you posess capability and interest in the profession.


Operator Experience Requirements

License Classification Required Experience
Very Small Water System (VSWS) 6 Months
Class I One Year
Class II Two Years
Class III Three Years
Class IV Four years

Click here to view the Policy for Evaluating Experience to Qualify for Level of Operator Licenses (PDF)


 

Examinations

Examinations for Water Operator licensure are offered by the Association of Boards of Certification (ABC). These standardized exams are nationally-based, multiple choice, validated, and reviewed. The Water Operators' Board urges Operators to become subject matter experts through ongoing education and welcomes participation in the exam development process.

Exams are computer-based, offered at a designated testing center. Traditional paper exams are also available by speciasl request. Exams do not need to be taken in the sequential order (passing lower levels and working one's way up); instead, they can be taken in a direct process (take one exam at the desired level of licensure).

Important: Passing the exam does not automatically result in licensure. After successfully taking the exam, candidate Water Operators must apply for their licenses through the Drinking Water Program. (See the 'Licensure' section below.)

For more information on exams for Water Operator licensure, visit the Water Operator Examination page of this website.

Note: Exam results are valid for one calendar year from the exam date.

 

Licensure

Once a cadidate Operator has passed the exam, an application for licensure (PDF) must be submitted to the DWP prior to assuming Operator dutes at a public water system. An Operator's first license is the initial license. This may be a license in either or or both treatment and distribution disciplines. Candidates may apply for an upgraded license after passing an exam that corresponds with the appropriate license classification.

 

Reciprocity

Water Operators certified or licensed by other State or Provincial certification authorities most often are recognized by the State of Maine. A candidate's education and experience are taken into consideration when determining reciprocity. Licenses or certificates from states with examination requirements similar to Maine's may not require re-examination. Candidates applying for licensure through reciprocity should still complete and submit an application for licensure (PDF).

 

For More Information

To learn more or for assistance, contact Tina Lemieux, Licensing Clerk:  Email or phone (207) 287-5699.


Updated 1/9/2023