Water pollution vocab

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Across
  1. 4. rainfall that flows over the ground surface
  2. 8. an identifiable source of air, water, thermal, noise or light pollution
  3. 9. a hole drilled into the ground to access water contained in an aquifer
  4. 10. water found underground
  5. 12. they damage the quality of air, water, and land
Down
  1. 1. the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity
  2. 2. the preservation, control and development of water resources
  3. 3. water that collects on the surface of the ground
  4. 5. the contamination of water or air that does not originate from a single discrete source
  5. 6. an area of land that drains all the streams and rainfall to a common outlet
  6. 7. the introduction of harmful materials into the environment
  7. 8. water that is safe to drink or use for food
  8. 11. a body of porous rock or sediment saturated with groundwater