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Black Mold? In Water Supply Plumbing

Discussion in 'Off-Topic' started by gxx9sdb, Jun 12, 2019 at 8:20 PM.

  1. gxx9sdb

    gxx9sdb NES Member

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    A few weeks ago I needed to do a plumbing repair and had to close the main shutoff to the house. When I turned the water back on again, there was black, nasty water that came out of every hose, faucet, toilet for the first 20 seconds or so.

    Today, I finally got around to cleaning behind the refrigerator after about 5 years and when I wiped down the supply line to the ice maker, I could see inside the clear tube that there is a good amount of black on the inside the pipe and it looks like it is in blotches / spots like how mold would grow.

    Any idea if I should be concerned about this or how to fix?

    I am in Shrewsbury on town water with no filter on the water. I have not noticed the that the water tastes off at all. I plan on calling the water department tomorrow to see what they say...
     

  2. ThePreBanMan

    ThePreBanMan NES Member

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    It's most likely mineral deposits. Municipal water contains chlorine. There shouldn't be anything growing in it. If you have some bad plumbing like dead end runs and what not where water can go stagnant than all bets are off.
     
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  3. TLB

    TLB

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    Probably mineral residue from inside pipes, not mold. Copper?
     
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  4. Raijin

    Raijin

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    The black color is from manganese
     
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  5. MisterHappy

    MisterHappy NES Member

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    On the 16 yard line, shootin' for the Lewis!
    This is why water pipes are opaque. So you won't worry.

    Not to dis your worry.....but don't worry. Oh... you don't have a location in your info block....you live in Filnt? [laugh]
     
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  6. gxx9sdb

    gxx9sdb NES Member

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    No dead ends, or at least I haven't found any yet.

    Yes, copper pipes.

    Located in Shrewsbury and good to know that it is probably not mold. I may still pick up a test to be sure though because the ice maker line looked pretty blotchy.

    Thanks all!
     
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  7. Asaltweapon

    Asaltweapon NES Member

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    This.

    You disrupted the fines. Run it till clear like you did and you are GTG.
     
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  8. LoginName

    LoginName NES Member

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    Same thing happens when the Public Works/Water Dept. conducts hydrant flushing.

    Usually goes away after opening all the taps and letting the water run for a few minutes or so.

    Just make sure to include running and flushing any clothes washer as well
     
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  9. amm5061

    amm5061 NES Member

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    Having experienced it several times as a child, a water main break will produce this type of shit as well.
     
  10. Spanz

    Spanz NES Member

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    I have seen putrid water in a closed off stub, but you say you do not have one


    Could be a former owner “winterized” the pipes with some unapproved crap?
     
  11. ISOTOX

    ISOTOX NES Member

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    Whole house water filter. Safe to assume your refrigerator has its own...if not install an inline filter.
     
    Last edited: Jun 13, 2019 at 10:16 AM
  12. Fixxah

    Fixxah

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    Get a filter kit. At the very least it will save the valves on fixtures.
     
  13. Dennis in MA

    Dennis in MA NES Member

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    If it's pink its womanganese.
     
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  14. swatgig

    swatgig NES Member

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  15. headednorth

    headednorth NES Member

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    I always assumed it was the washer being compressed when the water was shut off. Stop squeezes it like a sponge and when turned back on you get a blast of black water and a bunch of little crumbs. I always remove the aerator before opening the stop, let it run for a few seconds and then put it back on.
     

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