Across
- 3. area in a body of water with a very high demand BOD causing very little life
- 5. forever chemicals found in plastic
- 8. algae blooms are cause by this
- 9. a sewage pipe flowing directly into a lake
- 13. largest oil spill in the ocean
- 15. the stage before water is released back into the ground from a septic system
- 16. heavy metal found in pipes
Down
- 1. found in pipes and can cause brain damage
- 2. contaminated water runoff from farmland
- 4. found naturally in the groundwater and is toxic to humans
- 6. waste collected at the bottom of the tank, solid
- 7. shows scientist if there are infectious agents
- 10. homes in rural areas use this treatment system
- 11. toxic metal found in fish
- 12. boat that spilled oil in Alaska
- 14. standard for safe drinking water