Identifying a Drain or Sewer Problem
As hair, food particles, and other debris build up inside a drain, the water may drain slower. Eventually, the drain will become completely blocked. If the problem is restricted to a single drain, such as a sink or shower, the clog is most likely limited to that drain. However, if you have problem with more than one drain, it could be a clog in the main sewer line, which runs from your home to the street.

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