Water Pollution Crossword

4. Standard established by EPA for safe drinking water also known as __.
7. Occurs naturally in the Earth and leeches into groundwater.
8. Second legislation of dafe drinking water was __.
12. One would use this sewage system if they lived in a rural area.
13. Contaminates water through the lining of pipes.
15. Water produced by humans and livestock is __.
16. Compound is derived from plastic and is also used for insulation.
18. Name of the ship which crashed and spilled oil in Alaska is __.
20. Where the waste is collected in a septic system.
21. Solid waste material from water is called __.
22. Passed by legislation aiding in helping with cleaning water for recreation and marine populations.
23. Bacteria derived from animal fecal matter.
24. Found in high concentrations of tertiary consumers in aquatic ecosystems.
25. Main element in fertilizers.

1. Poisonous mercury compound is known as __.
2. Quick change in temperature of the water, potentially killing organisms in it.
3. Pollution from one distinct location
5. Seep into groundwater naturally and also hold a high amount of Nitrogen and phosphorous.
6. __ occurs when an excess of elements enters a water stream.
9. Specific form of coliform found in untreated wastewater.
10. Contaminate soil where military rockets may be manufactured.
11. Human-made and allows for waste to be dumped in.
14. Zone lacking stable amounts of BOD leading to the death of organisms in them.
17. Oxygen demand which varies among certain temperatures is called __.
19. Acid accumulation on Earth as a result of rain or snow.