Why does my shower water turn cold when a toilet is flushed?

Question by Shiomi Ryuu: Why does my shower water turn cold when a toilet is flushed?
I can be taking a nice, relaxing shower and -BAM!- someone flushes a toilet in another bathroom and the hot water vanishishes. It stays cold until the toilet tank is refilled (about a minute or two). Why does the toilet need my hot water? It’s a cold water device!

I’ve been in other showers at other’s houses, and the water becomes scolding when a toilet is flush. THAT, to me makes more sense, because the toilet is drawing away cold water for itself, leaving nothing but hot. But that’s not the case in my house. Why?

Best answer:

Answer by bearri
i guess it depends on the temperature of your house and your plumbing system…i serously have no idea

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