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Old 11-01-2010, 06:38 PM   #1
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Bottom drainage from brand new water heater is dirty...


I replaced an electric water heater. After it was filled, I opened the bottom drain under pressure to flush out junk that might be in there at the time of installation. It wasn't as clean as cold water, but wasn't too bad.

Few weeks later, I let out a few gallons for testing and its already disturbingly dirty.

Hot water that is pulled from top through faucets looks clean.

Picture compares cold water that is supplying the water heater and water drained from bottom spigot.

What is the brown stuff and where did it come from? I understand accumulation of crud with time, but this thing is less than a month old!

On the left is incoming cold water, on the right is water drained from the bottom spigot.


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Old 11-02-2010, 06:24 AM   #2
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Bottom drainage from brand new water heater is dirty...


Might be settlement from when you installed it. try running more out into a drain and retest. Are you on well water?

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Old 11-02-2010, 07:01 AM   #3
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Bottom drainage from brand new water heater is dirty...


Did you have this same issue with your previous water heater?

Maybe your water supply is inherently sediment laden. Not enough to see in the incoming cold water on a gallon for gallon basis but enough to collect in the tank after several tankfuls are used. Coarse enough that it settles to the bottom but fine enough that it comes out looking like colored water rather than sandy water. If this keeps happening you will need to drain a gallon or so from your water heater every month (from the looks of the bucketful I think you could go 3 months at a time).
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Last edited by AllanJ; 11-02-2010 at 07:07 AM.
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Old 11-02-2010, 03:23 PM   #4
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Bottom drainage from brand new water heater is dirty...


Looks like its time to change out the scrap plastic spigot with brass ball valve before it has the chance to become brittle then.

I'm not on well water and water in my area is considered soft.

Last edited by HVAC_NW; 11-02-2010 at 09:36 PM.
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