water supply vocab

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Across
  1. 5. water from rivers, lakes, and reservoirs
  2. 6. measure of how clean water is for a specific use
  3. 8. water located beneath the earth's surface
  4. 9. adding chlorine to water to kill bacteria and disinfect it.
Down
  1. 1. level of acidity or alkalinity of water
  2. 2. study of water movement, distribution, and quality
  3. 3. method of making water safe for use
  4. 4. the process of removing particles from water
  5. 6. area that drains into a particular water body
  6. 7. water released from clouds as rain, snow, sleet, or hail