What is the cost of;

500 feet of 6" water line installed
1000 feet of 8" sewer line installed
100 feet boring under street for 8" sewer line.

Hi Irad and welcome, prices vary depending on where in the world you are, check with three local supplier. Good luck

500 feet of 6" water line installed
1000 feet of 8" sewer line installed
100 feet boring under street for 8" sewer line.
Type of pipe and cost.
How deep is the trench and will a backhoe be rented? Cost?
Labor. Union? Nonunion? How many men? $ per hour per man.
Give me all of that and I'll have the basis for a estimate. Kind of difficult to give a estimate without being on the site.
Other wise follow the Partimners advice and get three local estimates. Good luck, Tom