Operator Certification Examination Dates, Applications and Reference Materials
The following table lists the upcoming examination dates and application deadlines. The examinations will be held at Goodwin College in East Hartford, CT. Additional information is provided in the Application Instructions. Click on any of the underlined examination titles to go to the application form for that examination.
| Examination Titles/Application Forms |
Application Instructions |
Exam Date |
Application Deadline |
| Water Treatment Plant Operator (DWPO) - Classes I, II, III,& IV | WTP Application Instructions | Monday, May 4, 2020 or Monday, May 11, 2020 | Friday, March 20, 2020 |
| DWPO Operator-in-Training (OIT) - Classes I, II, III,& IV | WT OIT Application Instructions | Monday, May 4, 2020 or Monday, May 11, 2020 | Friday, March 20, 2020 |
| Distribution System Operator (DWDO) - Classes I, II, & III | DS Application Instructions | Tuesday, May 5, 2020 or Tuesday, May 12, 2020 | Friday, March 20, 2020 |
| DWDO Operator-In-Training (OIT) - Classes I, II, & III | DS OIT Application Instructions | Tuesday, May 5, 2020 or Tuesday, May 12, 2020 | Friday, March 20, 2020 |
| Small Water System Operator - DWSO | SWS Application Instructions | Tuesday, May 5, 2020 or Tuesday, May 12, 2020 | Friday, March 20, 2020 |
Examination Reference Materials
The links below provide information on the examination subjects and reference materials for operator examinations. The Association of Boards of Certification (ABC) provides the certification examinations. The items listed on the subject lists are incorporated within the generalized exam topics on the ABC reference material lists. Please note that the reference material list for water treatment examinations is applicable to both the Water Treatment Plant and Small Water System Operator Examinations.
Providing these lists of references does not constitute an endorsement. The references on the lists are not the only training materials available. Although you may use these resources in preparation for certification examinations, these lists do not imply that any one of these references includes all information contained on an examination.