The clearest sign: multiple drains backing up or running slow at the same time.
A single slow or clogged drain is usually a localized issue — the drain itself or the branch line close to it. When the problem is in the main sewer line, it affects all drains downstream. You’ll notice: multiple drains in the house running slow, toilets gurgling when you run the washing machine, water backing up in the shower when you flush, or sewage coming up through the lowest drain in the house (often a basement or garage floor drain).
Other warning signs: a sewage smell in the house or yard, especially near floor drains. Soft, wet spots in the yard above where the sewer line runs. Recurring clogs in the same drain that do not stay fixed after snaking.
If you are seeing any of these — especially multiple affected fixtures — that points to the main line, not a fixture-level clog. A camera inspection will confirm exactly where the problem is.
Seeing symptoms of a main line clog? Call 678-799-4389 for same-day camera inspection.