1. LegendsCreekFarm

    LegendsCreekFarm New Member

    Joined:
    Sep 23, 2015
    Location:
    Foster, Rhode Island
    Good morning everyone.

    2 years ago we needed to tap into one of our shallow wells in order to run a new water line to our greenhouse. With the help of this forum we got everything installed and it has been working great however I did make a big mistake that we are now dealing with.

    The walls of the shallow well are concrete and after running the poly through the well wall I forgot to seal around the hole in the well casing. Now we have ecoli and total coliform in the water. I would like to fix this and have already taken a few steps.

    I installed a UV sterilizer which is working as it should to kill everything off. I also purchased liquid pool bleach at 13% hypochlorite which I will use to treat the well.

    I am going to drain the well and climb back inside on the ladder in an attempt to seal around the pipe.

    What should I use to seal the pipe? Would hydraulic cement work? I can also excavate the outside of the pipe where it enters the well and seal it there as well, I just don't know what to use.

    I should also say that in 2019 this well will be discontinued and used for irrigation only as we will be putting in a drilled well however I still want to address this issue so we can salvage this well as a backup in the event of drought years.

    Any advice is appreciated.
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Hydraulic cement would need to be applied to the outside.

    You might read up on
    3M 05220 Marine Adhesive Sealant Fast Cure 5200,
    green package theme

    3M T Marine Adhesive Sealant 5200 (week or so for complete cure)
    blue package theme

    These would probably be best outside, but if anything would work inside, maybe one of these would.

    I am not a pro, and have no relevant experience.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Yeah hydraulic cement is probably best. Be careful going down the well. You could encounter bad gas or lack of air.
     
    LegendsCreekFarm likes this.
  5. LegendsCreekFarm

    LegendsCreekFarm New Member

    Joined:
    Sep 23, 2015
    Location:
    Foster, Rhode Island
    Thank you very much for the info. I ordered the 3M05220 and will try to get in there and seal it, and I will put hydraulic cement on the outside . Hopefully this solves the problem after a heavy bleaching.
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    If you go into the outside, I would put some 3M05220 where pipe hits the concrete, and follow that with a big dose of hydraulic cement. That may be overkill, but I often like overkill.

    Inside push the sealant into the crack. You may have to restrain it somehow.. tape? Nitrile gloves are useful.
     
    Last edited: Oct 31, 2018
    LegendsCreekFarm likes this.
Similar Threads: Contaminated
Forum Title Date
Pumps and Tanks Well Forum & Blog. Water is life. Is my granular carbon tank contaminated? Aug 25, 2015
Pumps and Tanks Well Forum & Blog. Water is life. Contaminated pressure tank? Feb 21, 2009

Share This Page