Most I and I problems in sanitary sewers are due to what?

Most I and I problems in sanitary sewers are due to what?

• A. Main Sewer
• B. Storm Drain
• C. Service Laterals
• D. Interceptor

Answer: (C)

I and I problems happen when water from outside the sanitary sewer system ends up inside the pipes. The most common entry point is the service lateral—the pipe that runs from a building to the public sewer. Over time this line can crack, have loose joints, or develop roots intrusion, which lets groundwater (infiltration) and rainfall or surface water (inflow) seep in, especially during wet weather. There are many service laterals serving lots of properties, so even small leaks add up to a big impact on flow and capacity. Addressing service lateral leaks and removing improper connections like roof drains or sump pumps feeding the sanitary sewer can significantly reduce I&I, making this the primary source of most issues.

I and I problems happen when water from outside the sanitary sewer system ends up inside the pipes. The most common entry point is the service lateral—the pipe that runs from a building to the public sewer. Over time this line can crack, have loose joints, or develop roots intrusion, which lets groundwater (infiltration) and rainfall or surface water (inflow) seep in, especially during wet weather. There are many service laterals serving lots of properties, so even small leaks add up to a big impact on flow and capacity. Addressing service lateral leaks and removing improper connections like roof drains or sump pumps feeding the sanitary sewer can significantly reduce I&I, making this the primary source of most issues.