Water Leakage Detection Equipment

I have not checked for it, but if anyone has the equipment you are seeking it will surely be Time Motion Tools at www.timemotiontools.com

TMT-03-1000520 look up the preceeding item at www.timemotiontools.com It may provide considerable input for your problem.

If the leak is in a hot water system, thermal imaging would be a great way of detecting it, however if it is not the best way of finding the source. I would reccomend using acoustic detection where the sound profile can detect the source of the leak up to 10ft below ground, it can detedt with an accuracy of a few centimeters.(availiable for hire from ashead technologies, and other) If the pipes are buried deeper i would reccomend using tracer gas.

I agree. If the water is not showing up at some location that would provide us some evidence of where the leak is, then we always call a company that offers sound detection capabilities with a trained technician. It costs us about $300 each time. Some underground contractors purchased the sound equipment to own, but I believe having a trained technician eliminates many of the "false" detections. Good Luck.

Look for a wet spot that stays wet 24/7 or try a DYE pack, non lethal dye of course, to find the leak. I found it cheaper in one instance to replace the pipe from the meter to the home instead of tracing down a leak.

E-mail to Dick Olson at slocuda@charter.net or goco@utech.net

How much cheaper would it be to replace the underground water pipe than to buy detection equipment?

I think the suggestions given by various person are right but are not suitable for your level ,as they are costly. You should consult your plumber and ask him to check any malfunctioning of valves such as nonreturn valve which controls you tap supply which conects your residence's line with main sourcing line .