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Most signs of a burst pipe under house have nothing to do with visible water — they're a hissing sound, a gurgling drain, or a water bill that doesn't add up. This guide covers the real warning signs, what actually causes it, and a refined DIY water meter test that pinpoints whether the leak is inside your house or in the underground service line.

Plumbing issues in older homes almost always trace back to what the pipes are made of. This guide starts with a simple magnet test to identify your pipe material, then covers the real risks of ignoring it, actual repipe costs by scope, and the sewer line issue most guides skip entirely.