The hardness or softness of water is determined by its mineral content, primarily calcium and magnesium. Hard water contains higher levels of these minerals, while soft water has lower levels. These naturally occurring minerals not only influence water hardness but also affect other aspects of water chemistry, such as its taste and how it interacts with household plumbing and appliances.
For more information about water hardness, mineral content, and how these factors affect your water, visit our System Water Chemistry page.