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