AWWA M28

This operations manual provides guidance on selecting the best water-main rehabilitation techniques for your water distribution system. Step-by-step guidance, including costing, is included for the following methods:

• Cleaning: flushing, cable-attached devices, pigs and other fluid-propelled cleaning devices, and power boring devices.
• Lining: cement-mortar lining, epoxy lining, conventional slip-lining, close-fit slip-lining, and cured-in-place lining techniques.
• Replacement: Trenchless pipe replacement using pipe-bursting technology.