Across
- 2. The first country to use chlorine to kill germs in the water.
- 4. A water source under the ground.
- 5. The first people to record methods of treating water.
- 6. Water vapor becoming a liquid or a solid.
- 9. It comes in as rain, snow, sleet, or hail.
- 11. The Earth probably look like without water.
- 12. It is water under the ground that supplies springs and wells.
- 13. The first part of the Water Treatment System.
- 14. It has a negative charge.
Down
- 1. A water molecule has two of this.
- 3. It is when a liquid water becomes a gas.
- 7. The last part of the Water Treatment System.
- 8. It is water moving downward through openings in the soil.
- 10. The gas phase of water.
- 13. The solid form of water.