Across
- 4. System that measures surface water runoff
- 6. Water is able to pass through
- 8. The build-up of chemicals in fish and other organisms
- 9. Place where a hole is dug into the water table to get fresh water
- 10. A place covered in water
- 13. Barrier that holds water in a river back into a lake
- 16. Water is not able to pass through
- 17. Uppermost zone of the groundwater section
- 19. Liquid that runs downhill
- 21. Water that has more than 1000 milligrams of salt per liter
- 22. An area where water all empties into the same body of water
- 24. A source of pollution that can be directly sourced
- 26. Fresh water that is dirty
- 27. Water underground
Down
- 1. Area where water sinks through rock
- 2. A river and its tributaries
- 3. Concentration of toxins in organisms
- 5. Removing salt from water in order to make it safe to drink
- 7. Occurs when an overabundance of nutrients causes overgrowth of plants in a body of water
- 11. Where a river empties into the ocean
- 12. A source of pollution that can not be directly sourced
- 14. Underwater section of water that is usually contained in rock
- 15. Anything that contaminates a water source
- 18. Landscaping that involves little to no irrigation
- 20. Water that has less than 1000 milligrams of salt per liter
- 23. Area of land next to a water source
- 25. Large body of water used as a water supply