GREEN BAY (WKOW) -- Technology used to find water on Mars is now doing the same thing in Wisconsin.
It's leading to savings in at least one city.
Green Bay uses the Utilis Satellite Leak Detection System.
It found potential leaks in more than 10 percent of the city's water pipes in places the utility did not know there were problems.
"They're saying we're around 30 million gallons of water that we saved by the 57 leaks we repaired this year," said Nancy Quirk, General Manager of the Green Bay Water Utility.
Quirk said the satellite system cost about half as much as its old detection system.
It was only looking for leaks in the city's pipes, not individual homes. But it did find leaks in a few residences.