• Based on water temperature, springs can be classified as hot springs, warm springs, and cold springs.
• Based on mineral content, they can be classified as chloride springs, bicarbonate springs, and sulfate springs.
• Based on pH value, they can be classified as acidic, neutral, and alkaline springs.

Regarding therapeutic effects, acidic springs contain sulfides that produce a strong sulfur odor and have higher corrosiveness than alkaline springs, making them more suitable for medical therapy. However, patients should consult a doctor before bathing for safety.