| A | B |
|---|
| Point source pollution | Factory |
| Non-point source pollution | run off from fields |
| Chemical | Source created by humans |
| Biological | Source that is created by the environment |
| Physical | Sun |
| Total Suspended Solids | The amount of sediment in a stream |
| Nitrogen | High levels are found near golf courses and farm fields |
| Fecal Coliform | High levels found after heavy rains and floods |
| Chlorophyll a | Caused by algae blooms |
| Heavy Metals | Contamination is normally caused by industries and fossil fuels |
| PCB | Very dangerous and banned |
| Phosphorus | Occurs naturally but heavy rains can cause a high level for a short period of time |
| Temperature | affects the plant growth, amount of oxygen in water |
| Pesticides | includes all chemicals used in ag to control insects, weeds, ect. |
| Dissolved oxygen | low levels caused by the decaying plant material in a stream |
| Cold water | hlds high amounts of DO |
| Warm water | holds lower amounts of DO |
| pH | measures the acidity of water |
| 0-14 | pH scale |
