Karlskrona Kommun started working with the new solution in the beginning of 2020 and today they have installed approx. 700 flow IQ meters with integrated acoustic leak detection. The water utility has for many years worked with leak detection and preventive pipe replacement in area by area to reduce their water loss. The addition of acoustic leak detection means that they receive more data from their water supply network about possible leaks, all in all they will now get a solid system for finding, avoiding and preventing leakage. But already now they have found several service connection leaks – some more surprising than others.
“We have found and confirmed 7 leaks so far. Most of them were in old galvanised metal pipes, that were rusty and filled with small holes, but we also found one in a plastic pipe only about 10 years old.” This last particular service connection was in an village with a number of summer apartments, and the owner suspects the leak had been there from the start due to a faulty installation. “It had been leaking 2.5 m3/hour for ten years. That adds up to roughly 219,000 m3 – and at a production cost of 0,4 EUR/m3, that’s 86.892 EUR in total meaning that we will save 8.689 EUR every year on that leak alone.”
Without the new meters, Johan Georgsson doubts they would have found the leak. “Service connections are the building owner’s responsibility so we wouldn’t have found it without the meter. The area is very dry, rocky and close to the coastline, so the water probably just went into the sea and never would have surfaced.”