Warning – Water and elements are not the best mix and can over a period of time, affect the running of your Aquaflow system. Lime/Calcium deposits can collect on the heating rods and cause shorting and various associated problems.
Aquaflow cannot be held responsible for any limescale associated problems, we can only help to eliminate!
If in doubt speak to your plumber or local water supplier, who can advise accordingly.
Below is a map of hard water areas in the UK, which you can use as a guide.