I have an older apt with old galvanized piping. The main water shutoff valve
and main line at the bldg is old and corroded. The main line from the water
company meter at the street goes under the concrete driveway about 30'. I need
to replace the valve and maybe all the piping from the meter to the main valve.
How is the best way to do this? Below are some options and would appreciate
any opinions on the best and most economical way to do the job - the property
is located in Southern Calif.
1. Cut the concrete and dig out the entire line line and replace with new pipe
and valve.
2. Bore or tunnel out a new place for the line to go and push the line through
the tunnel. I have heard of this but do not know how practical it is.
3. Just replace the valve at the end. How do you attach the new valve to the
old pipe while maintaining strength - assuming part of the buried pipe is
strong.
4. Any other ideas about new techniques that are being used.

Can copper pipe be used for the buried part of the line?

I would appreciate any advice on the above.
Thanks, Rick