Soft water refers to water that has a relatively low concentration of dissolved minerals, especially calcium and magnesium. As a result, it produces less soap scum and lather, making it ideal for washing clothes and dishes. Some other synonyms for soft water include mild water, demineralized water, pure water, and distilled water. Additionally, it is often contrasted with hard water, which contains high levels of minerals that can cause mineral buildup on plumbing fixtures and appliances. Other terms used to describe hard water include mineral-laden water, alkaline water, and high-TDS (total dissolved solids) water. Understanding these terms can be helpful when choosing the right water treatment solutions for your home or business.