Apr
22
What is the water hardness in my area?
Posted by admin under Advice
Hard water is caused by calcium and magnesium compounds; rain water is naturally soft as it has had no chance to pick up any minerals from the ground. When water passes through the ground through soft rocks like chalk or limestone, it picks up these minerals. If the water passes through rocks such as granite or through peaty soil calcium and magnesium are picked up and so the water remains soft.