unsolvable APES puzzle

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Across
  1. 5. acid that is deposited on earth
  2. 7. an area in water with extremely low oxygen levels
  3. 10. a massive change in water temperature that kills organisms
  4. 13. increase in fertility in a body of water
  5. 15. underground septic systems made of pipes laid out
  6. 17. the middle layer in a septic tank
  7. 19. how much oxygen an area of water uses over time
  8. 21. when water becomes rich in nutrients
  9. 22. non chemical water pollution that occurs when the temperature of the water changes
  10. 23. the legislation that protects fish and wildlife recreation
  11. 24. the heavy stuff from wastewater
  12. 25. industrial compounds that manufacture plastic
Down
  1. 1. The standard of drinking water
  2. 2. pond lined with rubber that handles manure
  3. 3. harmless microorganisms in human intestines that are associated with sewage
  4. 4. streams, ricers, lakes and the ocean that is contaminated with substances
  5. 6. a small sewage treatment system
  6. 8. a big area that pollution comes from
  7. 9. legislation of national standards for safe drinking water
  8. 11. a large container that wastewater goes into
  9. 12. a single point that pollution is from
  10. 14. a liquid that humans drink
  11. 16. a species that indicates if a disease is likely to be present
  12. 18. water from livestock and human activities
  13. 20. chemicals used for rocket fuel