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Question DetailsAsked on 11/20/2015

how much it cost to install 100 feet of 3/4 water pipe on the ground?

Installation is better the front road and the back yard on dirt, 1 foot underground including box to install water meter

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2 Answers


Depends on exact digging conditions, etc - and if any special conditions exist like high groundwater or having to cross over other utilities or such, but generally from $2-5/LF would be a normal price, and about $100 to terminate it at both ends, including the meter box (without meter). Don't forget shutoff/isolation valves, winter drain valve if needed, and of course once completed it needs to be disinfected, which can between them add another $100-200 or so for this sort of job. Plus permit and inspection if needed in your area - typically $50-100 range but in some areas can be $250 or so for a plumbing permit.

Toward lower end using a contractor (typically a Well and Pump contractor for this sort of thing) who has a tractor with a trenching tool and using flex poly pipe, toward higher end for hand-dug or requiring a backhoe to do it and/or using copper. Of course, this does not include extreme hardpan or bedrock digging.

One thing to look into - 3/4 is awfully small for a 100 foot run from the street (which I am assuming this is) - usually service line is 1 inch minimum unless VERY short run, and for a 100+ run commonly 1-1/4 or 1-1/2" especially if service pressure is not high, to avoid losing valuable pressure in the main feed run. Check with building code official, and/or ask your contractor about that - but I sure would NOT recommend 3/4" line.

Answered 4 years ago by LCD


One thing for readers of this question to note - the excavation cost is unusually low because only 1 foot deep burial was stated in the question.

As noted in the comment from Toronto where he paid roughly $50/LF - in areas with deeper burial (typically 3 foot minimum by code, up to 10 feet in some deep winter frost zones - 6 feet in Toronto as I recall) - can run $20-50/LF depending on depth, and up to $100/LF or more for new excavation in bedrock that is too hard for backhoe excavation without a hydraulic point or blasting.

Answered 4 years ago by LCD

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