Technology Demo Pinpoints Water Leak for Virginia Utility

When the leak detection experts at 540 Technologies™ consult with a prospective customer, a live demonstration can show how smart city solutions such as ground microphones, data loggers and data correlators identify leaks in underground water systems and pinpoint the location of those leaks within a few inches.

The 540 Technologies team helped a customer who was already well-versed in leak detection convince his manager that investing in smart technologies would benefit the utility's bottom line.

"Luther had been wanting this mic for a couple of months, but his boss had been apprehensive about the purchase," said a 540 Technologies Technical Consultant. "I had already done a DXmic demo for the customer, but those making budget decisions were looking for a little bit more assurance. We decided to meet up and search for a leak the utility suspected existed in a particular neighborhood."

With a DXmic and TriCorr Touch Pro correlator in hand, the duo went "hydrant hopping" to listen along some of the utility's older steel service lines, which were more likely to be the source of the leak versus newer PVC piping. On the very last service line they tested, the mic detected some noise, and the team decided to divide and conquer.

While 540 worked to correlate the leak by placing the TriCorr Touch Pro on above-ground access points (in this case, water meter shut-off valves) along the service line, the customer moved the ground mic away from the service line toward the water main to ensure the leak wasn't further down the line.


When a service box was opened and had water in it, the water tested positive for chlorine. But, because of the limited amount of water contained in the service pit, the 540 team could have assumed the meter itself was leaking.

However, the 540 team believed the leak was much larger and set out to prove it. Calculations using the correlator's findings pinpointed a spot 20 feet away from the service line, along the main itself.
The team used that spot to take out the ground microphone again and listen on the pavement for the loudest noise.
They used that spot to take out the ground microphone again, listening on the pavement for the loudest noise where the correlator had indicated. The DXmic led them to a point just a few feet from the correlator’s location. When someone was sent to dig, they found they were spot on by using the mic and TriCorr together.

"Luther was surprised to find that the tiny amount of water getting into the service pit was actually being caused by a 15-gallon-per-minute leak," said the 540 team.

With such a significant finding, the customer's manager was convinced of the value that a DXmic would bring to the utility in helping staff find additional leaks and reduce non-revenue water loss.

540 Technologies stands ready to help the utility with additional smart city tools as well as the expertise and training to use them.

540 Technologies not only provides water-loss management tools but also trains customers to use those tools effectively and implement them correctly. Instead of simply selling equipment and moving on, we support customers in building a comprehensive water-loss management system.

If your utility, municipality or organization would like to know more about 540 Technologies and the smart city solutions that can help you find leaks and manage water loss, call us at 570-372-8857, or contact us through our online form.