South West Water is supplying the southwest of England  and  Northern Ireland water is responsible for whole Northern Ireland.  Here in the actual case we are talking about Crownhill water works. The water, which is produced by the water works, the pH-value has to  be  stabilized, so it fits the requested requirements. It is very common to use lime slurry, more or less pure lime scale for this task. Lime slurry is added to the water and so the pH-value gets stabilized.
As to be expected this lime slurry is forming a lot of scale in the pipes and hoses, and are a constant cause of service and cleaning. In order to make things easier very often hoses are used instead of fixed pipes, because they are easier to replace if needed.
The picture to the left shows the cross section of the pipe as it normally looks, right before the installation of the Merus Ring. The end of the hose app. 180 meter downstream looks the same.

This lime is causing a row of technical problems for the companies. Not only the hoses are scaled, but as well the the pumps feeding the lime slurry to the water tanks got scaled. This led to regular break down of the pumps, and service teams have to fix the problem 24/7, all around the year.

After installing Merus, the scale didn't form anymore. As can be seen at the picture to the left the cross section of the hose is totally clean. The company cross checked as well at the end of the 180 meter hose, it looks the same as at the beginning.
The pumps feeding the lime slurry got far less worn down than before. The sealing in the pumps are lasting longer, and there are far less emergency break downs, and so far less maintenance during the weekend or in the middle of the night required.