How hard is your water?
Reverse Osmosis, Distilled, or extremely soft water
Soft water is surface water that contains low concentrations of ions and in particular is low in ions of calcium and magnesium. Soft water naturally occurs where rainfall and the drainage basin of rivers are formed of hard, impervious and calcium-poor rocks.
<50 PPM OF HARDNESS
SOFT TO MEDIUM GROUND OR CITY WATER
The simple definition of water hardness is the amount of dissolved calcium and magnesium in the water. Hardwater is high in dissolved minerals, both calcium and magnesium. ... Depending on the hardness of your water, after using soap to wash you may have felt like there was a film of residue left on your hands.
vERY hARD WATER
Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed whenwater percolates through deposits of limestone and chalk which are largely made up of calcium and magnesium carbonates.