Water Distribution
- DWD401 - Cross Connection and Backflow Prevention
- DWD402 - Disinfection of Watermains
- DWD403 - Exam Prep Water Distribution & Supply Levels 1 & 2
- DWD404 - Exam Prep Water Distribution & Supply Levels 3 & 4
- DWD405 - Controlling Lead Contamination in Drinking Water
- DWD406 - New Watermain Installation
- DWD407 - Operation and Maintenance of Fire Hydrants
- DWD408 - Tapping Watermains
- DWD409 - Watermain Breaks and Repairs
- DWD410 - Water Metering and Installation (800A)
- DWD411 - Watermain Flushing and Swabbing
- DWD412 - Introduction to Drinking Water Distribution Operation and Maintenance
- DWD413 - Basic Water Treatment for Water Distribution Operators
- DWD414 - Distribution of Valves/Valve Box Lockout Operations & Repairs
- DWD415 - Distribution of Valves/Valve Box Lockout Policies & Procedures Implementation
- DWD500 - Math For Water Operators