Deteriorate laterals allow root intrusion and infiltration of groundwater into the sewer system

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Laterals can and will deteriorate over time, allowing root intrusion and infiltration of groundwater into the sewage system. Sometimes, the groundwater enters through cracks in the lateral but even more often, roots and ground-water enter the pipe through open joints. This ground water is sometimes referred to as “clear water” (even though it may be dirty) to differentiate it from household sewage. Water & Sewer Clear water infiltration into in a house