If cold water looks clear but hot water is discolored at several taps, the source may be on the hot side, including the heater or hot-water piping. The pattern is more informative than the color alone.
Compare hot and cold at more than one fixture
Use a clear glass at a kitchen or bathroom tap to see whether the color shows up on both sides. Note whether it clears after the first draw, how long the fixture sat unused, and whether recent plumbing work preceded the change. Avoid drinking discolored water while you investigate.
Share the pattern before replacing equipment
Tell the plumber which fixtures are affected and whether the heater is a tank or tankless model. One discolored hot tap may point to a local branch or fixture. Several affected taps warrant a closer look at the heater and shared piping before deciding what needs repair.
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