Across
- 2. __________ cause water-born diseases in water (8)
- 6. type of pollutants that can be removed using a filter (9)
- 7. where water is held before it comes through pipes to our homes (9)
- 8. using sand to remove larger particles from water (9)
- 9. when clumps of impurities in a liquid settle (13)
Down
- 1. before water is supplied to residence the water is sent to a _____________ plant to be cleaned (12)
- 3. a chemical used to clean water (7)
- 4. to remove impurities (6)
- 5. the process before the water enters the purification plant (9)