Quote:
Originally Posted by getdul981
And just where do you suppose all those things come from? Could it be from the cold water going into the tank???
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Not really, it comes primarily from the heating element itself and sacrificial anode, ever look inside an old one? they get pretty nasty.
That's why they should be turned off drained fill, drain again, once a year.
Try it you can catch the water coming out and look at the junk in bucket.
This is something any home owner can do no plumber needed
This Old House video
Hot water can grow bacteria.
The source cold water is tested I assume daily