water?

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Across
  1. 3. A lake the stores water for human use,
  2. 5. Count ,Test of water contamination that indicates the extent of fecal matter present in the water,
  3. 8. measurement of how clear the water is
  4. 9. A compound found in fertilizer and waste products,
  5. 10. A rapid increase in algae population,
Down
  1. 1. The measurement of how acidic or basic a substance is,
  2. 2. Preventing the wasteful use of a resource,
  3. 4. The saltiness of a body of water,
  4. 6. The process where air is mixed with or dissolved in a liquid,
  5. 7. A compound found in waste and cleaning products,