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Across 1. a body of water with little to no salinity 4. small scale sewage treatment system 7. the level of hot or cold the water is 9. Submerged Aquatic Vegetation 10. the amount of oxygen in the water 13. has a scale of 0-14 7 being nutral 15. a surface that water can mave through 17. has two tails 18. cant blame one specific person or thing 23. helps plants grow 24. has three tails 25. a surface that nothing can get through 26. used his feet to test water 28. first level of wastewater treatment 32. a body of water with to high levels of salinity 36. the rise or fall in the temperature of a natural body of water caused by humans 37. enter waterways from human and animal waste 38. does not belong in the water 39. the only fly that can live in poor water quality

Down 2. the process of algae bloom to no dissolved oxygen 3. chemical runoff 5. famous body of water in maryland 6. area in a stream devoid of oxygen 8. removal of solids from natural evironment and transported to the water 9. second level of wastewater treatment 11. high levels of it can cause the death of fish 12. Massive algae growth 14. provide a warning of failure in water treatment 16. a factory is an example of 19. the third and final level of wastewater treatment 20. devoid of a backbone 21. how deep water is 22. removing contaminants from the water 27. adding chlorine to water 29. can cause death or injury to living creatures 30. the variation of life forms within a given ecosystem, biome, or for the entire Earth 31. a body of water with medium levels of salinity 33. a body of land thst depends on one water source 34. a tanker spills this into a body of water 35. The level of salt in water