Across
- 2. turning water into water vapour
- 5. another form of disinfection involving the sun
- 6. when water is released to the environment
- 9. treated water that is flushed to the sea
- 10. running water through a filter to remove larger particles
Down
- 1. chemical used to treat water
- 3. when you add air to water to promote growth of bacteria
- 4. small microbes that breakdown waste
- 7. the water cycle starts here
- 8. what we call waste that is flushed down the toilet