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Earthworm Hyrdo-Drill

Are you sick of tripping over the electrical cord every Halloween or the hose every summer when you’re watering? Why not move the pesky obstruction underground? With the Earthworm Hydro-Drill you can bore holes under the ground without trenching or ripping up your lawn.

The Hydro-Drill uses water pressure to blast through the soil and and carry the dirt away. Just connect a water hose and an electric drill and you can bore holes as far as the length of your 3/4″ pipe — unless you hit a rock or obstruction.

Wheeler Rex sells their 7800 Earthworm Hydro-Drill as a 2″ auger and a combination drive/water assembly. You have to supply your own water, electric drill, and 3/4″ diameter pipe. Additional 1″, 3″, 4″, and 6″ augers can be purchased separately.

The basic Earthworm Hydro-Drill will run you about $200. We’d also recommend that you call your local utility or One Call dig line before undertaking a project with this tool.

Earthworm Hydro-Drill [Wheeler Rex]
Street Pricing [Google Products]


8 Responses to Earthworm Hydro-Drill

  1. Jim German says:

    Its a little bit messier but if you need to drill a hole through the dirt under a sidewalk you can just use a pressure adapter on the end of a hose.

  2. Bill says:

    I seem to recall seeing a similar application for boring straight down using air pressure instead, basically just a steel pipe with a high pressure outlet, might be less muddy than this application. Especially since here in New England you can’t dig 2 feet without hitting a large rock!

  3. Ryan says:

    Technically, one should not be burying regular extension cords as per the NEC. Cool tool though, if it works as advertised.

  4. Sorry, I didn’t mean to imply that you should bury your extension cord. I just thought this was a cool alternative to trenching.

    Personally I ran 2″ PVC underneath my concrete steps and sidewalk, angled both ends up 45 degrees, and glued on thread adapters so I could put on caps. This allows me to run power for my Halloween decorations so kids don’t trip over my extension cords when they come to the door trick-or-treating I also run hoses to my garden in the summer. The rest of the time I seal them off.

    I did it the hard way though, I dug a trench the length of the pipe beside the walk and kept ramming the pipe underneath the sidewalk until it came out the other side.

  5. David says:

    WARNING: Make absolutely positively certain to use a working GFI breaker when using an electric drill anywhere near water — one good electrocution can ruin your whole day.

    By the way, I doubt if any ordinary drill would be powerful enough to drive this very far. I recommend a Milwaukee Hole Hawg $300, which will last forever, or maybe the Chicago Electric Right-Angle Drill $100 from Harbor Freight.

    I’ve been looking for something like this to move some of my sprinklers to better locations without digging up my perfectly good yard. Thanks for this article. Keep up the good work!

  6. LoneRider says:

    Or it can be a great method for cheap worms. An old friend of mine’s grandfather had a 220v extension cord setup with two grounding rods. He would place the rods about 30 or 40 feet away (IIRC) from each other, plug it in on a night with a decent amount of dew, next thing you know, WORMS!

    My friend learned first hand about the term “Step potential” first hand when his Mom called and he took a couple of big steps!

    Don’t try this at home, but if you must, plastic chairs and only pick up the worms near your feet, and of course, small steps 🙂


  7. Raul Cordova says:

    Earthworm up to 4″ pipe

  8. Raul Cordova says:

    I need to bore a hole 4″ in diameter approx 8 feet please help.

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