Texas Wastewater Class B Practice Exam

What type of wastewater source includes rainwater runoff?

1. Domestic

2. Storm water

3. Agricultural

4. Industrial

The correct answer is: Storm water

The correct choice is indeed storm water. Stormwater refers specifically to the runoff that occurs when rain falls on surfaces like roads, roofs, and other impervious materials. This type of water is often collected and managed separately from other sources of wastewater, as it can carry pollutants and debris that affect water quality. Other sources of wastewater, such as domestic, agricultural, and industrial, have different characteristics and origins. Domestic wastewater typically comes from household activities, agricultural wastewater relates to runoff from farming operations that may include fertilizers and pesticides, while industrial wastewater arises from processes in manufacturing and other industrial activities. These types of wastewater involve more complex treatment needs and processes compared to stormwater, which primarily requires management to prevent flooding and pollution during rain events.