1. Drinking Water, Wastewater & Water Quality Special emphasis on NC streams

2. http://www.charlestonwater.com/water_trt_process.htm

3. Indicators of Water Quality -NC Streams 1-Chemical Ammonia Nitrates/NitritesAgricultural & Domestic Sources Phosphorus pH of natural waters = 5.6, lower means impairment Dissolved O 2 -cold temps mean high D.O. Conductivity Metals; Arsenic, Mercury, Iron, Copper, Zinc, Lead. Some are from natural mineral deposits.

6. 2-Physical Stream Velocity Runs Riffles Pools Turbidity Total Dissolved Solids 3-Biotic Index High Diversity = Good Water Quality Low Diversity (lots of one or two organisms) means poor water quality

9. Benthic Macroinvertebrates

11. Non-point source pollution Sedimentation Agricultural sites Animal feedlots Croplands Stormwater runoff Contains oil, gas, pesticides, salt Metals- Even small amounts can be harmful EPA limit for Arsenic = 10 parts per billion (ppb)

13. Stormwater Runoff

14. Sedimentation in Streams