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Indirect water heater tank back flow questions
Bought a house about 4 years ago with a 20 year old indirect water heater tank (boiler heats the coil).
It had a bunch of rusty sediment in it, which made the hot water dirty, so I flushed it several times.
Since then the hot water has been okay, but I've been noticing lately the COLD water quality is making the toilets and sinks stain. I have city water and I do not "think" my underground pipes are busted.
Would it be possible for the rusty indirect water heater tank to back flow causing the cold water supply to become rusty?