You can probably find what your looking for if you start here:

http://www.globalspec.com/Industrial-Directory/pipe_locator

Bricktop,

How about water witching? If you have the "force" you can locate buried water pipes using a willow branch...or are you a skeptic?

Its note wise to base your tender on mystic principals. but I have seen it done and done it.

I did not find a sonde that was small enough in this area of the site.

May I ask why you would want to insert a probe to locate the service when other non intrusive methods may serve your purpose?

The service is both copper and poly with no tracer wire.