E Fey and son uses 1'' poly pipe under ground, we use under ground fittings, we mole under grade and make it like we were never there. If on a crawl space we install a valve up stairs in a spot for emergency access.  We install a psi gauge so u can monitor the pressure.  Our price includes out side spigots and irrigation tied back to the well.  We do not install dry lines we are completed in two days.  Holes will be backfilled within the two days as well.  Complete price is $1850 with the best material for the job.  We also hand dig our holes no back hoe or excavator used to ashore we don't have any problems with irrigation or utility's.