Water Pollution Crossword

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Across
  1. 2. this is a compound found in plastics that can cause cancer if ingested
  2. 5. this is the lowest layer of a septic tank, consisting of solid waste material from wastewater
  3. 8. this military compound used for rocket fuel can pollute soil and groundwater resources, reducing the production of hormones in animals
  4. 10. nothing can survive in this part of the water (if it develops)
  5. 13. the abundance of nitrogen and phosphorus in a body of water will increase fertility and lead to this
  6. 19. this was established by the Safe Water Drinking Act, which focused on pollutants in drinking water
  7. 21. these organisms are used in the second stage of sewage treatment to break down organic materials
  8. 22. what pollutant caused pelican populations to go down because of thinner egg shells?
  9. 24. smokestacks can lead to this dangerous event that reduces the pH of water bodies
  10. 25. sewage treatment plants are allowed to pump this into nearby bodies of water during period of intense rainfall
Down
  1. 1. what are used to kill pathogens in the tertiary treatment of sewage (which is not present in all sewage treatment plants)
  2. 3. an increase of bacteria in waters will also increase this
  3. 4. this is known as the worst oil spill of all time
  4. 6. the burning of fossil fuels and coal produce over two-thirds of this material, which can damage the central nervous system of humans (specifically children)
  5. 7. these materials are human-made and can be toxic, cause genetic defects, and interfere with growth and development
  6. 9. large amounts of animal waste from farmlands drain to these areas, which usually lead to groundwater pollution due to the direct interaction with soil
  7. 11. this is the name of the most prominent indicator species of coliform bacteria
  8. 12. sonar and loud noises can lead to this action by whales and other marine animals
  9. 14. runoff from a suburban community that pollutes water is known as a…
  10. 15. this is caused by thermal pollution
  11. 16. heavy sedimentation in water can cause this, which makes it more difficult for animals to survive
  12. 17. these are used to filter septage from septic tanks
  13. 18. additives to increase pesticide effectiveness that are often harmful are called this
  14. 20. federal guidelines for building construction required installation without this harmful metal, in order to reduce the risk of it entering water systems
  15. 23. this metal is carcinogenic and exists naturally in groundwater