When a single sink clogs, it is usually a local problem. When several drains act up at once, you may be dealing with a clog in the main sewer line — a much bigger issue that will not clear with a plunger. If sinks, showers and toilets across the house are all draining slowly, the blockage is likely in the shared main line rather than any single fixture. Gurgling from a toilet or drain when you use another fixture means air is being pulled through the pipe because water cannot flow freely. It is an early warning worth acting on. A persistent sewer smell in the house or around the yard usually means wastewater is backing up or leaking somewhere in the main line. If flushing a toilet causes water to rise in the tub or shower, the sewer line is partially blocked and the wastewater has nowhere...
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