By means of innovation, new technologies and thorough leak detection methods, Greater Copenhagen Utility, HOFOR, has brought water losses in the capital of Denmark down to a minimum and sustainable level. HOFOR has succeeded in reducing specific water losses by more than 75 percent since 1977 where the water losses have been reduced from 13.3 m³/day/km main to 3.1 m³/day/km main corresponding to an overall reduction in NRW level from 9 to 5 percent.
VIDI Positioners contribute to improved overview at Denmark’s largest utility.
The LEAKman partnership continues to support the reduction of water losses in the Danish water sector through research projects where the partnership formed under LEAKman is a key in the development of competences and talents.
Experiences from Malaysia and Oslo demonstrate how useful a new online tool, the meter data validation tool, is. The tool determines if deviations in data from water meters indicate an actual water supply issue or if the meter simply needs a calibration.
The water supply plant at Via Bassa, San Giovanni in Persiceto, is managed by Gruppo HERA and feeds two aqueduct branches, serving two different parts of the city, including a high water demand hospital. The existing pumping system was made by four end-suction Grundfos pumps controlled to guarantee a discharge pressure of 2.6 bar.
Historically, Norway has had almost unlimited access to drinking water at quite low costs. As a result, there has only been little focus on NRW and NRW-levels around 50 percent were not unusual.
In Copenhagen, Denmark, the local utility company Frederiksberg Forsyning has invested in intelligent pumps and advanced pump control with Grundfos DDD – Demand Driven Distribution – to reduce water leakage and energy consumption.
The DMA in Klampenborg, north of the Danish capital Copenhagen, is located along the coastline of the Oresund strait and is located in a low-lying area. Consequently, the pressure in the water mains is high as the water supply comes from sources located inland at a higher elevation.
In 2019, the town of Oneida, Tennessee was experiencing an impossible situation. With increasing state regulations and massive water loss, the water department was taken over by the local government.