Guess this riddle. What can kill us for 3 reasons, but we still need it to survive?

The answer to the riddle is "water." Here are the three reasons why it can be dangerous: 1. **Drowning**: Water can cause drowning if someone is submerged and unable to breathe. 2. **Contamination**: Contaminated water can lead to waterborne diseases that can be fatal. 3. **Overconsumption**: Drinking too much water in a short period can lead to water intoxication, which can be harmful or fatal. Despite these dangers, we need water to survive as it is essential for hydration and numerous bodily functions.