EFHSS Questions and Answers - Question Q00104

We have a water softener system installed at our home. My question is, why when we run low on salt does a brownish water end up at the bottom of the salt tub, and is there a specific process we should be using in order to clean this?
I was worried that we should be in some way sterilizing this container. Also, even with this softener system we are still getting a white film on our dishes and glasses and fixtures. Would considering RO be a possibility to rectifying this?
Thank you so much for considering my question.
Christa

Dear Christa,
Your question is not entirely our speciality but I've searched for an answer in the hemodialysis department of our hospital. I hope it puts you on the right track.
The technician told me that the brownish water in the salt hub is probably due to the presence of iron in the tap water and/or in the regenerating salt. The best way to clean it - if compatible with your installation - is the use of a solution of sodium hypochlorite 200 ppm. Rinse careful with water to eliminate all desinfectant.
The white deposit is - also probably - due to remains of calcium in the demineralised water. The technician advises you to check the hardness of the water to control if the installation is functioning well. Take hereby into account that household water softeners normally do not run on hardness 0 water to protect the pipes.
Indeed RO could be a solution but it is expensive and the water very corrosive. In this case plastic pipes are required.
Good luck,
Wim Renders