What is in fire hydrant water?

Related questions

1. What is hydrant system?
2. How does a dry hydrant work?
3. Who invented fire hydrant?
4. Is fire hydrant water drinkable?
5. What is a yellow fire hydrant?
6. Is it illegal to paint a fire hydrant?
7. What is a wet barrel fire hydrant?
8. Is it illegal to open fire hydrants?
9. Why is a fire hydrant important?
10. How much is a fire hydrant cost?

Tags

1. #which
2. #point
3. #hydrant
4. #active
5. #connection
6. #supply
7. #firefighters
8. #protection
9. #water
10. #component