Infiltration is caused by

Infiltration is caused by

• A. Improper closed circuit TV operation.
• B. Cracked pipes.
• C. Poor ventilation.
• D. All of the above.

Answer: (B)

Infiltration occurs when groundwater enters the sewer system through defects in the sewer infrastructure. Water from the surrounding soil seeps into cracked or leaking pipes, as well as through faulty joints and manholes, especially during wet weather when groundwater pressure is higher. The best explanation here is cracked pipes, since they provide openings for soil water to enter the sewer. Improper closed-circuit TV operation is about inspection methods and wouldn’t cause infiltration, and poor ventilation relates to air handling rather than water entering the sewer system.

Infiltration occurs when groundwater enters the sewer system through defects in the sewer infrastructure. Water from the surrounding soil seeps into cracked or leaking pipes, as well as through faulty joints and manholes, especially during wet weather when groundwater pressure is higher. The best explanation here is cracked pipes, since they provide openings for soil water to enter the sewer. Improper closed-circuit TV operation is about inspection methods and wouldn’t cause infiltration, and poor ventilation relates to air handling rather than water entering the sewer system.