I have a leaking water main, unsure exactly where, but it's leaking about 3-4 gallons an hour. Don't know exactly how long with the sprinkler season, but only anticipate it to get worse. Fortunately not an emergency at the moment, but is only temporary. Any suggestions?

If you've replaced yours recently, did they burst it, pull a new line, dig a whole trench, etc? Any recent idea on cost?

Salt lake county by the way.