Cross-Connection Control & Backflow Prevention

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Cross-Connection Control & Backflow Prevention


Drinking Water Operator
Credit Hours:
Course ID:
Format Options:
SKU: MA-401 Category:


How it works

This independent-study course, “Cross-Connection Control & Backflow Prevention”, is self-paced and 100% online. There’s no travel, no classroom and no waiting on rigid course schedules or mailed course materials.

The course is accessible through your account anytime and anywhere you have an internet connection. Since it’s self-paced, you can study the lessons a little each day or complete multiple lessons in a single sitting then take the online exam at the end for instant results.


Course Description

“Cross-Connection Control & Backflow Prevention” outlines the concepts of cross-connection and backflow; and the techniques and equipment used to protect cross-connections and to prevent backflow. It covers the components, operation, applications and testing basics for eight types of backflow prevention devices including the Air Gap, Barometric Loop, Atmospheric Vacuum Breaker (AVB), Hose-Bibb Vacuum Breaker (HBVB), Pressure Vacuum Breaker (PVB), Double Check Valve Assembly (DCVA), Residential Dual Check Valve (RDCV) and Reduced Pressure Zone Device (RPZD).  Understanding these concepts is essential to protect public water supplies and to comply with US federal and Pennsylvania state regulations.

At the completion of this course, the student will be able to:

  • Define cross-connection, backflow, backsiphonage and backpressure.
  • Identify common cross-connections and explain why cross-connection control and backflow prevention are necessary.
  • List potential causes for backsiphonage and backpressure and describe the conditions needed for backflow to occur.
  • List and explain methods for backflow prevention.
  • List eight types of backflow prevention devices and for each type:
    • Identify its schematic.
    • Explain its operation.
    • List its advantages and disadvantages.
    • Describe its application(s).
  • List and explain indicators of backflow.
  • Describe the methods for mitigating backflow events.
  • Explain the regulatory basis for cross-connection control programs.
  • Describe a typical backflow prevention program as outlined by the PA DEP Water Supply Manual.

Registration for this course entitles the student to course support from SkillWorks. After passing the final exam the registered student will also receive an official Continuing Education Course Certificate of Completion that will be accepted by the Massachusetts Department of Environmental Protection (MassDEP) for operator certification renewal for the licenses listed in the table of course details above.


(SkillWorks, Inc. does not receive payment or other economic benefit from the manufacturers, distributors or vendors of any products shown, discussed or otherwise included in the instructional materials for any course.)