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About This Item


Full Description

This standard presents essential procedures for disinfecting new and repaired water mains. Topics covered include forms of chlorine disinfection, a description of the disinfection procedure, preventive and corrective measures during construction, methods of chlorination, final flushing, bacteriological testing, redisinfection, final connections to existing mains, disinfection procedures when cutting into or repairing existing mains, and special procedures for caulked tapping sleeves. Appendices cover chlorine residual testing, and disposal of heavily chlorinated water.

Document History

  1. AWWA C651-05

    Disinfecting Water Mains

    • Most Recent
  2. AWWA C651-99


    Disinfecting Water Mains

    • Historical Version