Division Links

Study Help: Division of Drinking Water

Prepare and study for the certification exam. The exam consists of 100 multiple choice questions and a minimum of 70% is required to pass.

The exam will cover these six categories:

  1. Math
  2. Operation and Maintenance
  3. Pumps
  4. Chemical Feed
  5. Rules
  6. Safety and Security

Choosing a Grade Level to Test For

Some Public Water Systems may be required to have a certified operator at a certain grade level depending on the system’s population and complexity. This requirement is specified on the system’s IPS Report and is available online at waterlink.utah.gov.

Discipline Grade Levels Population Math O & M Rules Pumps Chemical Feed Safety & Security
Small System (SS) 25-500 12 24 24 24 12 16
Distribution Grade I (D1) 501-1,500 15 22 19 13 15 16
Distribution Grade II (D2) 1,501-5,000 15 22 19 13 15 16
Distribution Grade III (D3) 5,001-15,000 13 20 20 15 15 17
Distribution Grade IV ( D4) 15,001 and over 13 22 20 13 15 17
Treatment Grade I (T1) 25-1,500 15 25 15 10 15 20
Treatment Grade II (T2) 1,501-5,000 15 23 20 14 14 14
Treatment Grade III (T3) 5,001-15,000 15 26 20 14 15 10
Treatment Grade IV (T4) 15,001 and over 17 25 23 10 15 10

Study Materials

Math Conversions & Formulas

Mathematical conversions and formulas for drinking water treatment and distribution.

Rules and Regulations

The Utah Safe Drinking Water Act (Title 19, Chapter 4 of the Utah Code) grants the Utah Drinking Water Board the authority to establish regulations for public water systems. The Federal Safe Drinking Water Act, enacted by Congress and administered by the US EPA, adopts and enforce rules which must be met by each public water system in the nation. By agreement with the EPA, Utah implements and enforces the federal act within the state. Public water suppliers in Utah should consult the state’s laws and regulations for guidance. Public water suppliers in Utah should refer to the state’s laws and regulations.

Screencast Videos & Quizzes

Videos covering operator certification topics and quizzes containing sample questions.


Presentations for each category included in the exam.

Basic Math✔️✔️✔️✔️✔️✔️✔️✔️✔️
Advanced Math✔️✔️✔️✔️
Pumps and Motors✔️✔️✔️✔️✔️✔️✔️✔️✔️
Safety and Security✔️✔️✔️✔️✔️✔️✔️✔️✔️
Operation & Maintenance✔️✔️✔️✔️✔️
Treatment Operation & Maintenance✔️✔️✔️✔️

Study Guides

Study Guides contain sample questions for each category included in the exam. Refer to the presentations and other study materials to locate information for answering the questions

Study GuidesSSD1D2D3D4T1T2T3T4
Basic Distribution (PDF | DOC)✔️✔️✔️✔️✔️
Advanced Distribution (PDF | DOC)✔️✔️
Basic Treatment (PDF | DOC)✔️✔️✔️✔️
Advanced Treatment (PDF | DOC)✔️✔️

Training Videos

The Rural Water Association of Utah has practice quizzes available for a small fee.

Find pre-certification classes and more training and relevant events near you. Provided by the Utah Water and Wastewater Training Coalition.

The exams were created using certain textbooks as official references. You can check out these books and many more great resources for free. You can check out these books by filling out the request form.


Dawnie Jacobo (DDWOpCert@utah.gov): (385) 272-5038

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