How to find an Underground Water Leak?

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[richardhaley]

Im a plumber with leak detection experience. Running temporary pex pipe to supply the house was overkill. You determine a leak by watching the meter after shutting off all the toilets in the house. If the meter moves when everything is off then you have a leak.Turn off all the hot water in the house, if the meter continues to move then the leak is on the cold water side. Shut off the main water supply valve at the house. If the movement at the meter continues then you have a leak between the meter and the house. If you have an irrigation system you can isolate that as well. Finding the leak is done by inducing nitrogen against the water flow at the point you know you are at the down line location of the leak. As the nitrogen is induced the technician is watching and listening for the nitrogen to hit where the pipe is leaking. Then, the technician is listening with a sonic amplifier to hear the leak. In cases where the pipe is deeper in the ground helium instead of nitrogen is used. When inducing helium then tech will listen for a squelling sound and will use another device called a helium sniffer to find the leak. With very large pipe on commercial buildings a device called a coorelator is used. This device works off a magnetic field and the signiture a leak makes in the pipe. Call qualified, trained people.😂

[thomaspackard]

And now, moving on to more helpful videos.

[dustman]

Waste of time. You didn't tell us how to diagnose/find the leak, you just told us you need fancy equipment.And you didn't even show how to use that. The only useful thing in this was showing how you can supply your house with water while you diagnose.

[meggrimaud]

I was hoping to see the process of finding the leak. What equipment was used? How did they know where the leak was?

[brabanthallen]

I found the leak at 3:30. It's right behind you....you can see it and hear it in the video. It's leaking like a fountain.

[catherineruud]

That's time I can't get back watching this video!

[kurtsnotes]

I have a huge leak* in an outdoor buried PVC line (with its own shutoff valve). The line is isolated from everything except three outside spigots. Unfortunately, our house is built on a hill, and the entire hill (covered with bus-size half-buried boulders) was made buildable by bringing in countless truckloads of fill. That means the leak water doesn’t show up anywhere; the leak apparently goes into the fill, and leaves no evidence of a leak. In order to find the leak, I even paid $400 to a man that specializes in locating underground utilities. No luck at all; his state of the art equipment will not find PVC pipes, and rapid on/off valve cycles didn’t produce any underground sounds that he could detect. My final alternative now is to hire men (younger and stronger than me) to dig a trench to expose the PVC pipe, looking for a tee or a break in the line (100 feet or so).
*The “leak” is so big that when I pressurize the line the spigot water drops to maybe half flow, and even when the spigots are off, the house water pressure drops dramatically.

[DNS]

Well that didn't help anyone actually locate a leak.

[joevarga]

The irrigation system SHOULD have been designed with a shut-off valve where it ties in to the main water supply. You shouldn't have to run a water line to the house, lol. WTF?

[JP-gcin]

You didn’t say how you found the leak.

[phatnana]

Lol, my water department just told me it was my problem to find it. I'm a grandmother on social security and I can't pay plumbers large amounts of money to do this kind of thing.

[kaname]

Since the camera involved expect high repair bill

[yzmoto]

They didn’t find the leak, that why it’s not on the video. These guys sub contracted a real plumber to do the work.

[timbrown]

Should have read the comments first. What a waste of time.

[byronrace]

Uh...that was how to avoid showing how to locate a leak.

[Keepingthefaith]

How does this help the normal person find a water leak

[ikbenvoetbal]

Somewhere between his brain and my brain there was a leak of knowledge.

[bojk]

Why repair it that way? Now it will have more restriction right?

[anotherOneMore]

Telling us that you use a lot of equipment to find it is NOT helpful.

[villvis]

Answer is @5:39 Video is pretty much worthless unless you have air tanks, safe gas and acoustic equipment what ever those are.