Water Fun

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Across
  1. 3. biological treamtent of sewage
  2. 5. small pollution
  3. 8. president who started EPA
  4. 10. one source of pollution
  5. 11. heavy metal with 10 ppb allowed in water
  6. 13. using booms to control this spill
  7. 14. Landmark decision to set water standards
  8. 16. company behind
  9. 18. area where animal
  10. 19. indicator of biological polluion
  11. 20. light a match to contain this oil spill
  12. 21. waste in water
Down
  1. 1. company behind Alaskan oil spill
  2. 2. sediment separation treatment of sewage
  3. 4. excess algae
  4. 6. more difficult water to source to fight pollution
  5. 7. fun environmental disaster
  6. 9. fish chemical
  7. 12. if people are not connected to a city sewer system, they probably have this to treat their wastewater
  8. 15. name of ship in Alaskan oil spill
  9. 16. oxygen demanded
  10. 17. large area source of pollution
  11. 20. fun plastic chemical
  12. 21. main chemical in rain