Essential Backflow Prevention Resources
Find backflow prevention resources including approved backflow assemblies, case histories, cross-connection control manuals, testing references, and industry links to help you learn, stay informed, and prepare for certification.
Backflow Prevention Resources Manuals & Approved Assemblies
Use these resources to review approved backflow prevention assemblies, manufacturer references, and recognized standards used across the industry. Tap a section to expand. Links open in a new tab.
Approved Backflow Assemblies/Devices
American Society of Sanitary Engineering (ASSE) Product Performance Standards
American Water Works Association (AWWA) Publications: Standards
USC University of Southern California Foundation for Cross-Connection Control and Hydraulic Research: List of Approved Backflow Prevention Assemblies
Watts; Products Compliant to ASSE Standards
Backflow Cases and Incidents
Backflow incidents are more common than you think. Here are a few links to lists of cases over the years.
ABPA Backflow Incidents
Backflow Cases
Backflow Prevention: Backflow Incidents
BSI Online: Cost of a Backflow Incident
Pacific Backflow: Backflow Incidents
University of Florida TREEO Center: Case Histories of Selected Backflow Incidents
USC Manual of Cross-Connection Control 10th Edition
Chapter 11: Backflow Incidents — over 50 pages of backflow incidents going back to 1929.
Watts: Backflow Incidents That Could Have Been Prevented
Backflow Prevention & Cross-Connection Manuals/Textbooks
Here’s a list of backflow training manuals and textbooks to help you learn the material better. We’ve included links where you can buy them.
ASSE/IAPMO/ANSI Series 5000-2022
Buy from their websiteAWWA M14 Backflow Prevention and Cross-Connection Control: Recommended Practices, Fourth Edition
Buy from their websiteEPA Cross-Connection Control Manual
Read hereInternational Association of Plumbing and Mechanical Officials (IAPMO)
3rd Edition IAPMO Backflow Prevention Reference Manual
Buy from their websiteUniversity of Florida TREEO Center
Backflow Prevention: Theory and Practice, 3rd Edition
Buy from their websiteUSC Manual of Cross-Connection Control, 10th Edition
Buy from their websiteCSA B64 Series:21
Buy from their websiteBackflow Forum
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History of Backflow Prevention
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