landscape water loss?

[sacgurl]

A sprinkler zone has about 7 rainbird popups. One of them (farthest from the controller) bubbles from the soil, as well as emitting a healthy spray. I suspect a fine crack in the pvc. Question: how much water am i losing in 10 minutes? Popup is attached to 1/2" PVC.

thank you!

 

[WorthFlorida]

For about $3-$5 dollars you can replace it and not have to worry. It is impossible to answer.

Follow this link for a simple picture of what is underground. The leak can be anywhere.

http://www.homedepot.com/catalog/productImages/1000/bb/bb1bb438-b367-41f9-aea0-3272129da941_1000.jpg