Plumbing What is this?

Learn all you need to know about pipes, fixtures, drains, and more, and get expert advice on how to maintain, replace, and install plumbing

plumbing in house drawing

From the Ground Up: Plumbing

A primer on your pipes and fixtures from This Old House plumbing expert Richard Trethewey… more

Plumbing Tip

If an unknown odor makes you wonder if your sink's water source is contaminated, try cleaning the sink first. Left alone, the sink's overflow holes accumulate bacteria, but pouring a small amount of chlorine bleach down the overflow and sink drain will clear up the problem.—When Sinks Stink

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