Across
- 3. A factory-like building where dirty water can be treated to use for households.
- 4. An area of water smaller than a lake, often made by people.
- 6. A tube inside which liquid or gas flows from one place to another.
Down
- 1. A natural or artificial lake where water is stored before it is taken by pipes to houses, etc.
- 2. The act of cleaning a toilet with a sudden flow of water.
- 5. A pipe that carries away dirty water or other liquid waste.