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How to Repair a Broken Underground Water Line
HOW TO 
Tags: Underground Water Line, Water Line Problems, Water Line Repair
A broken water line can be a big costly mess so it is best to take care of it as soon as possible. Here is how to repair a broken underground water line.
| 1. | Determine where the water line is leaking. It's usually where the water is oozing to the surface. |
| 2. | Insert an air hose inside the line past the point of the break and apply air pressure to empty the line of remaining water. |
| 3. | Find a water line hose one size smaller than the broken water line. Insert it into the larger pipe and push it in, well past where the break is thought to be. |
| 4. | Keep pushing it into the pipe until the far end is submerged in water. You can tell by blowing into the smaller pipe and hearing bubbling. |
| 5. | In the space between the two pipes, inject an expanding urethane foam crack filler. The harder, less expanding type works best. |
| 6. | Hopefully, the urethane ran down to the water level, began to foam back up, sealed the crack, and you will see it oozing back out the top. |
| 7. | Clean up the excess foam, and wait for it to harden. |
| 8. | Connect the inner, smaller water line to the system and apply water pressure again. |
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