AWWA-64281 Water Main Disinfection and Dechlorination

New water mains, repaired water mains, and in-ground pipe that has been contaminated by cross-contamination or backflow, must be disinfected before being put into service. This video visually demonstrates the process described in AWWA Standard C651.05, Disinfecting Water Mains. Viewers learn: 

• reasons for disinfecting water mains
  
• protecting water pipe from becoming contaminated while in storage, transport, and during installation 
• chlorine disinfection
• dechlorination
• residuals disposal