Across
- 2. Dirty water runs down here in our houses.
- 7. The spread of this can be stopped by treating waste water.
- 9. The 'good' stuff is used to clean the water at the last stage.
- 10. Where you can find a network of pipes and sewers.
Down
- 1. Dirty water also runs down here in our houses.
- 3. Rain water from the roads, roofs and gardens is known as...?
- 4. Dirty water is flushed down here in our houses.
- 5. Smaller particles settle as this.
- 6. Anything that flows through a sewer is known as..?
- 8. Carry dirty water to treatment works.