A couple months ago the girlfriend and i saw spurts of black coming out of both the bathroom faucet and bathtub faucet when running the hot water.
Black water coming out of bathroom sink faucet.
Natural resin beads from your water softener are often black in color like charcoal.
Left unchecked the corrosion can continue until the galvanized pipe completely dissolves.
Take the stopper outside and clean it thoroughly putting the nasty mess in the trash.
Black spurts of water coming out of bathtub and sink faucet.
There are three main reasons this might take place.
The corrosion that builds up is usually black in color.
While this mineral is often present in the water supply when it mixes with oxygen it can turn black.
A few spurts would occur usually shortly after the faucet was turned on however i also seen it happen after running the hot water for a couple minutes.
Replace the stopper and lock it back into place.
Under the right conditions with the right natural minerals and elements in the water like magnesium then you could get black water out of the faucets.
What causes black water coming out of the faucet.
Sometimes the water softener can break down and the resin beads can get out and into the water system.
The old rubber in the flex hose started to deteriorate and rubber particles got into the water.
If you saunter into the bathroom and turn on the faucet to find a burst of black water you likely want answers right away.
Clean the sink stopper from which the black gunk is coming.
Alternatively the sediment accumulated in the water heater could turn water black.