Especially in older buildings carbon steel pipes or galvanized steel pipes are used to distribute the drinking water. One problem about these materials is corrosion. For the user it gets visible as brown or rusty water. Often this is the case after no water has been drawn for a long time – for example during holiday season or in holiday apartments during winter.
If the water gets clear after a few seconds or minutes there is no need to worry. This is caused by small corrosion spots which occur while the water is stagnating. Loose rust particles are flushed out with the first use of the tap. This is not dangerous for your pipes or health and no further investment is needed.
If there is brown water regularly (everly morning), this could be an indicator for severe corrosion in the water system. In order to prevent your pipes from pitting corrosion and high renovation costs it can be worth investing in preventive measures like the Merus Ring. Depending on the type of corrosion, the corrosion rate can be reduced to a minimum which means less rust in the pipe.
Brown Water – Before and After installing a Merus Ring
In these cases it is very easy (and impressive) to verify the success of the Merus Ring. Just take water samples in closed bottles as shown in the picture. You can take one sample of hot and one of warm water to see, if both systems have a problem. Take these samples before and after the installation (at least two times) at the same tap and after similar standstill of the water. Please note that right after the installation the water will be even darker than before, as existing corrosion needs to be flushed out before there can be improvement. To support and speed up this process you can open the water supply fully often in the first days after the installation.
Far easier for private homes is the method to just fill the sink with water (ideally a white sink) and see how the water clears up after the installation.
In bigger and more complex applications (big apartment buildings, hotels, hospitals) we not only take water samples for you or support you with the visual inspection. We also analyse the iron content in the water.
On average the corrosion rate can be reduced to less than 2 MPY and remains stable at this low level. In these cases the brown water will be gone in four to six weeks. There is no need to replace the pipes anymore which reduces effort and costs significantly.