Across

1

• Across
• 3. BOD
• 8. Disinfection
• 9. Ammonia
• 10. Coagulants
• 13. Collection
• 14. Nitrates
• 17. Filtration
• 18. Gasoline
• 19. Cations
• 21. Chemical
• 22. E.coli
• 24. Aquifer
• 25. Mercury

Down 1. Ultraviolet 2. Arsenic 4. Ozone 5.
Drycleaners 6. Sedimentation 7.
Hydrologic 11. Secondary 12. Aeration 15.
Fluoride 16. Potable 19. Calcium 20. 0.02 23. Floc
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