Question. The home I work at has hard water and we use a water softener. For the last few months we've had a real problem keeping our potatoes from going a greyish to light black after the're peeled and in water. You can see the water turn "rusty" within a few minutes. Has anyone seen this before?
Here is a pic of a system used at work.
The smaller machine is the water softener
The taller machine ( Water Iron Filter Machine) is used to remove iron from the water. If they did not have this machine it would turn the water pinkish/reddish.
Some places also use manganese, it all depends the individual case.
I read here:
"The maximum amount recommended in water is 0.3 mg/L which is same as saying 0.3 Parts Per Million or PPM. When the level of iron in water exceeds the 0.3 mg/l limit, the water may have a red, brown, or yellow color and stain laundry and fixtures
Read more: http://www.cleanwaterstore.com/technical/how-to-treat-iron-well-water.php#ixzz2adBFH85h"
I so not know what system is being used at your work but there is definitely a problem, or maybe something else is going on ?