What are source control and treatment control measures?

Source control measures prevent stormwater from becoming contaminated with pollutants, whereas treatment control measures attempt to remove pollutants from  stormwater that has already become contaminated. Source control measures are ALWAYS the most effective means to protect water quality. Examples of source control measures include pre-sweeping paved surfaces before power washing, avoiding the use of copper in pools and fountains and using straw mulch to prevent erosion. Treatment control measures include wastewater filtration systems and silt fences.

Show All Answers

1. Are sewers and storm drains the same thing?
2. What kind of pollutants are found in the storm drain system?
3. What is an illicit discharge?
4. What are source control and treatment control measures?
5. What are the cities, town and Napa County doing about illegal dumping and illicit discharges into storm drains?
6. Is it illegal to wash my car in my driveway?
7. Yard clippings and leaves are natural, so they don't cause problems if swept into storm drains, right?