Hot black water coming out of bath tap in newly refurbished. Bathroom

[Ben-gee]

I read this as OP having one bath and one shower.

You’re probably right, I haven’t checked!

 

[Bones66]

No other suggestion from me , sorry if you don’t like the answer.it just seemed off the cuff unneces

 

[Bones66]

That’s fine I just ran full speed in and off for about 20 mins and all good. Just trying to find out from plumbers that f they had come across this. So thanks for your help Ben but it cleared itself without replumbing the house! So idea was sound to use return but hadn’t realised the temporary issue of black water. So if any one else has similar . Don’t replumb , just be patient .

 

[ShaunCorbs]

That’s fine I just ran full speed in and off for about 20 mins and all good. Just trying to find out from plumbers that f they had come across this. So thanks for your help Ben but it cleared itself without replumbing the house! So idea was sound to use return but hadn’t realised the temporary issue of black water. So if any one else has similar . Don’t replumb , just be patient .

Until the water is turned off then back to black bits again

 

[Brambles]

I don’t want to sound to be Jonah, but the black residue is / was probably magnetite, which is potentially toxic to humans. It also causes corrosion of the copper pipe, which increase the Cu concentration in the water.

As an aside repurposing copper gas pipe to potable water can cause similar problems, but with different contaminants.

If you are planning to leave tue installation as is on a potable water system, for peace of mind I would get a sample of the water tested - it costs around £40 ex Vat.

 

[Bones66]

Until the water is turned off then back to black bits again

Then again be patient and will resolve again im sure

 

[Bones66]

I don’t want to sound to be Jonah, but the black residue is / was probably magnetite, which is potentially toxic to humans. It also causes corrosion of the copper pipe, which increase the Cu concentration in the water.

As an aside repurposing copper gas pipe to potable water can cause similar problems, but with different contaminants.

If you are planning to leave tue installation as is on a potable water system, for peace of mind I would get a sample of the water tested - it costs around £40 ex Vat.

Not planning on using for drinking. It’s the hot water supply to house that was repurposed.

 

[Ben-gee]

This is irresponsible behaviour and not something any decent plumber would do.

But crack on, I know you’re very pleased with yourself.

 

[SimonG]

You've fecked up, it's not the way to do it.
End of.