Black Poly Pipe: How long does it last?

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by Ted M, Jan 21, 2015.

  1. Ted M

    Ted M New Member

    Joined:
    Dec 3, 2011
    Location:
    Northern New Hampshire
    My house is about 35 years old; maybe 1979. I bought it in 1987.

    The black poly pipe runs about 30 feet underground from the well and then another 25 feet under the concrete footing and concrete basement floor. It sticks up out of the concrete about one foot near the captive tank.

    The ID is 1 inch, and the OD is about 1.37 inches. I do not know the pressure rating. No well info.

    Today I received a letter from some uninvited insurance company wanting to insure the piping, for $65 a year.
    They claim the well pipe was installed in 1977. No idea how they could tell. Could be correct though.

    So, how long should this underground black pipe (about five feet underground, then under finished basement) be OK?

    Thank you.

    Ted
     
  2. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    I replaced my 1978 black poly pipe five years ago. I had more like 50 feet.
    Most of the time, it's becauses something like a tree root had grown around it, or rocks have rubbed against it.
    Five feet? I don't think I would worry about that.
     
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  4. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    I agree with Terry. I know where there is lots of poly pipe still working since the 70's. As long as it doesn't rub on a rock or have tree roots growing around it, it will be fine.
     
  5. Hader

    Hader New Member

    Joined:
    Jun 6, 2019
    Location:
    Texas.
    "or have tree roots growing around it"

    Is there a solution or a better way if there's a lot of trees around? I have to run 200'+ next to a tree line. There's isn't 1 SqFt without some kind of roots in this property.
     
  6. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Tree roots will push and pull on any kind of pipe. But poly is more flexible and is as good as you can get with tree roots. Roots will also grow into the connections under the barb fittings and around and into threads. Been replacing all of mine with the same HDPE type pipe but is butt fused or welded together so there is no place for the roots to get in.
     
    Hader and Blue Oak like this.
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