Across
- 2. a stream going to a large river or lake
- 7. The contamination of water sources
- 8. a really, really small organism
- 9. free of any contamination
- 10. The draining of water
- 14. surface water from rain or snow
Down
- 1. Where a gutter discharges into a sewer
- 3. Can cause disease
- 4. electricity made by water
- 5. makes something free of dirt/bacteria
- 6. Is the base fluid that keeps us alive
- 8. Equal to one millionth of a meter
- 11. synonym for dirty
- 12. Water from faucet
- 13. land that separates waters