Water Distribution Operator Need-to-Know Criteria
Need-to-Know Criteria outline the content that will be covered on WPI’s standardized examinations provided through ABC Testing, a WPI service.
- Water Distribution Operator Class I
- Water Distribution Operator Class II
- Water Distribution Operator Class III
- Water Distribution Operator Class IV
Water Distribution Operator Formula/Conversion Table
WPI standardized exams are administered with a Formula/Conversion Table containing mathematical formulas and common abbreviations that may be present on the exam.
Water Distribution Operator Exam References
The following are approved as reference sources for WPI’s standardized water distribution operator examinations. Operators should use the latest edition of these reference sources to prepare for the exam.
American Water Works Association (AWWA)
- *WSO: Water Distribution Series (Grades 1 & 2, Grades 3 & 4)
- **Water Quality & Treatment
- Water Distribution Operator Training Handbook
- Basic Science Concepts and Applications
- Water System Security, A Field Guide
- M68 Water Quality in Distribution Systems
*These WSO texts replace the previous AWWA title, Water Transmission and Distribution
**This WSO text replaces previous AWWA title, Water Quality, 3rd Edition
Association of State Drinking Water Administrators (ASDWA) and National Rural Water Association (NRWA)
California State University, Sacramento (CSUS) Foundation, Office of Water Programs
- Water Distribution System Operation and Maintenance
- Small Water System Operation and MaintenanceUtility Management
- Water Treatment Plant Operation, Volume I and Volume II
- Utility Management
- Manage for Success
Regulations
- United States: Code of Federal Regulations, Title 40, Part 141
- U.S. state regulations (contact information for state certification programs is available on the OpCert Program Contacts page)
- Government of Canada (Federal-Provincial-Territorial Subcommittee on Drinking Water): Guidelines for Canadian Drinking Water Quality
- Canadian provincial and territorial regulations (contact information for state certification programs is available on the OpCert Program Contacts page)
