The material to be used in a ...

The material to be used in a drinking water networks depends on its operating conditions and its environment.

If now you are using concrete pipes, I guess it is a large diameter adduction and gravity working. The concrete pipes can not stand the pressure, although with a steel liner these pipe could be used. Under these conditions, probabily you could use too a PVC double wall corrugated.

If the current application operates under pressure, more appropriate materials may be a reinforced fiberglass polyester, PVC-O, high density polyethylene or casting. They are ordered from lowest to highest lifecycle, and costs. They are not equivalent: in very aggressive soils can better be a plastic, while with high traffic loads, varying flow conditions or high pressures is better casting. Also depending on the diameter of the pipe there may be variations in costs for the same material, both the price of the tube as the tools required for installation. By the other hand, presence a lot of conections can do dificult the use of polyester pipes.

You should tell us some more data to help you better.