Water Quality & Pollution

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Across
  1. 3. city or urban
  2. 7. means water is drinkable
  3. 10. est 1972 to decrease industrial pollution
  4. 11. where water is cleaned and filtered
  5. 12. massive explosion of algae growth
  6. 13. pollution where cause is easily identified
  7. 14. filter through permeable soil and rock
Down
  1. 1. act est. 1974 to insure potable water
  2. 2. suffocation of fish due to increased algae
  3. 4. chemicals or fluids that flow outward
  4. 5. pollution cause is too massive to identify
  5. 6. synonym for pollution
  6. 8. protection by conservation and clean up
  7. 9. chemically bound particles in water