Skip to content


Wastewater management

Water management

Lower specific energy and reliable flow estimates in wastewater networks

2. September 2020

Solution provider


We are a global water technology company committed to pioneering solutions to the world’s water and climate challenges and improving the quality of life for people.

More from Grundfos

Want to see this solution first hand?

Add the case to your visit request and let us know that you are interested in visiting Denmark

Request Visit

Large amounts of infiltrating water swell the water volume in the pipes to around 10 million m3 a year. As the local water and wastewater utility, Provas, only gets paid for handling 2 million m3, this is bad for business. Solving the problem required a detailed overview of flow patterns at every single pumping station. To resolve this issue, Provas and Grundfos tested the Grundfos Dedicated Controls pump controller using the energy optimisation feature and the flow estimation feature. After three months of testing, flow estimation was correct to +/-5% and specific energy was reduced by 36% at one of the test pumping stations. Monitoring energy consumption over time showed potential energy savings at Provas’ 150+ network pumping stations. Provas benefitted from operational savings, a better system overview and project plans now based on actual operating data and flow estimates.