Tapping in relation to water supply is the process of making a connection to an existing water main to install a service line or another distribution pipe. It involves drilling a hole into the m

Here are the answers to your questions:

1. Tapping in relation to water supply is the process of making a connection to an existing water main to install a service line or another distribution pipe. It involves drilling a hole into the main and attaching a fitting to draw water.

2. Two ways/methods of tapping on water mains are:

   • Wet tapping (or hot tapping)
   • Dry tapping (or cold tapping)

3. A water main is a primary underground pipe in a water distribution system that transports large volumes of treated water from a source or treatment plant to smaller distribution pipes and service lines that lead to individual properties.

4. The difference between wet tapping and dry tapping is primarily whether the water main is under pressure during the connection process:

   • Wet tapping is performed on a live, pressurized water main without interrupting the water flow.
   • Dry tapping requires the water main to be de-pressurized and often shut down, temporarily stopping water flow, before the connection is made.

5. Here are the advantages and disadvantages of each type of tapping:

   • Wet Tapping (Hot Tapping)

     • Advantages:
       • No interruption of water service to customers.
       • Avoids de-pressurizing the main, which can prevent potential contamination and air pockets.
     • Disadvantages:
       • Requires specialized equipment and highly trained personnel.
       • Generally more expensive due to complexity and equipment.
       • Higher safety risks due to working on a live, pressurized main.

   • Dry Tapping (Cold Tapping)

     • Advantages:
       • Simpler procedure and less specialized equipment required.
       • Lower cost compared to wet tapping.
       • Generally safer as the main is not under pressure during the process.
     • Disadvantages:
       • Requires shutting down the water main, causing service interruption to customers.
       • Can lead to air pockets and potential water quality issues upon repressurization.