Water Wisdom Crossword

12345678
Across
  1. 4. The act of adding chlorine to wastewater to kill pathogens (12 letters).
  2. 6. The type of waste often coming from homes and businesses that is treated in plants (8 letters).
  3. 8. A key river in India affected by pollution and cleanup efforts (6 letters).
Down
  1. 1. The stage in wastewater treatment where particles settle out (10 letters).
  2. 2. A major U.S. program started in 1972 to improve water quality (13 letters).
  3. 3. The type of treatment that uses microorganisms to break down organic matter (10 letters).
  4. 5. Osmosis The process of filtering out dissolved salts and chemicals (10 letters).
  5. 6. The process of removing large particles from wastewater (10 letters).
  6. 7. A stage in wastewater treatment that involves separating solids from liquids (11 letters).